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Avaya Configuring Frame Relay Services User's Manual

1. Frame Network Network Frame relay node node relay switch switch Router FROO04A Figure 1 4 Structure of the DLCMI DLCMI supports three standard data link management specifications LMI ANSI T1 617 Annex D and CCITT now ITU T Q 933 Annex A e The networking industry first developed the Local Management Interface LMI specification The LMI approach is asymmetric the router sends a status inquiry message to the network signaling that the router s connection to the network is functioning The network replies with a status response e ANSI modified the LMI specification and incorporated it as Annex D to ANSI standard T1 617 The ANSI method is generally similar to the LMI approach e The CCITT now ITU T modified the ANSI standard and adopted it as Annex A to Q 933 The CCITT Annex A specification is similar to Annex D but it uses an international numbering scheme Be sure to configure the frame relay interface on the router to use the same management protocol as the switched network to which it is connected For information about configuring frame relay see Chapter 3 Customizing Frame Relay Interfaces 308624 14 10 Rev 01 1 7 Configuring Frame Relay Services Frame Relay SVC Signaling and LAPF Figure 1 5 shows the layers of protocol standards for frame relay signaling e The LAPF Core layer defines basic fra
2. Frame relay defines the interface between the DTE router and the DCE switch VC virtual circuit Router FROOOLA Figure 1 1 Frame Relay Network 308624 14 10 Rev 01 Frame Relay Overview Frame relay assumes that networks use transmission lines with low error rates such as digital transmission media Consequently frame relay provides only basic error detection with no error recovery This minimizes the processing required for each packet allowing frame relay networks to operate at high speeds with few network delays Because frame relay performs only basic error checking end stations running upper layer protocols such as the Internet Protocol IP are responsible for resending packets that did not transmit correctly the first time Permanent Virtual Circuits A permanent virtual circuit PVC is a dedicated logical path that connects two devices over a network Once configured a PVC is always available to the connected devices a PVC does not require setup before data can travel across the network nor does it need to be disconnected after data has passed Since many PVCs can coexist for one physical line devices can share the bandwidth of the transmission line Switched Virtual Circuits A switched virtual circuit SVC is a logical path that is established on an as needed basis That is an SVC exists only when there is data to transfer SVCs can connect any tw
3. You do this System responds 1 In the Configuration Manager window The Protocols menu opens choose Protocols 2 Choose Frame Relay The Frame Relay menu opens 3 Choose Interfaces The Frame Relay Interface List window opens 4 Select a service record that has SVC support enabled 5 Click on Signaling The FR Signaling Parameters window opens continued 308624 14 10 Rev 01 5 21 Configuring Frame Relay Services Site Manager Procedure continued You do this System responds 6 Set the following parameters Signaling Control Max SVCs 7303 Setup Message Timer 7305 Disconnect Timer T308 Release Timer T310 Call Proceding Timer e 7322 Status Enq Retry Timer N322 Status Enq Retry Max Click on Help or see the parameter descriptions beginning on page A 18 7 Click on OK You return to the Frame Relay Interface List window 8 Click on Done You return to the Configuration Manager window Setting Inactivity Values for SVCs You can control how and when the router disconnects SVCs according to values that you configure for amount of time and the direction that data is flowing You can set values for a service record or for individual SVCs You can use either the BCC or Site Manager to set inactivity values for SVCs Using the BCC You can use the BCC to set values for a service record or for individual SVCs You set both the SVC s inacti
4. You return to the Configuration Manager window To delete frame relay from all interfaces and service records complete the following tasks Site Manager Procedure You do this System responds 1 In the Configuration Manager window choose Protocols The Protocols menu opens Choose Frame Relay The Frame Relay menu opens Click on Delete Frame Relay A confirmation window opens and prompts Do you REALLY want to delete Frame Relay 4 Click on OK The confirmation window closes You return to the Configuration Manager window 3 12 308624 14 10 Rev 01 Chapter 4 Customizing PVCs When you enable frame relay default values are in effect for all Bay Command Console BCC and Site Manager parameters for Site Manager parameter descriptions see Appendix A Site Manager Parameters Depending on your network requirements you may want to change these values The following sections describe how to customize frame relay for your network Topic Page Configuring PVCs Using the BCC or Site Manager 4 2 Adding Service Records 4 3 Adding PVCs to Service Records 4 5 Deleting PVCs from Service Records 4 7 Moving PVCs from One Service Record to Another 4 9 Enabling Multicast 4 1 Configuring Hybrid Mode for PVCs 4 12 Configuring PVC Pass Through 4 13 Controlling Congestion for PVCs 4 1 Using Traffic S
5. Excess Burst Throughput Click on Help or see the parameter descriptions beginning on page A 28 Click on Done You return to the Frame Relay Service List window Click on Done You return to the Frame Relay Circuit Definition window Click on Done You return to the Configuration Manager window 308624 14 10 Rev 01 4 25 Configuring Frame Relay Services Disabling and Reenabling Data Compression for PVCs Compression control is enabled by default You can use either the BCC or Site Manager to disable or reenable compression for PVCs Using the BCC The wep control command specifies whether compression is enabled or disabled for a PVC By default compression is enabled To disable compression for a PVC navigate to the prompt for the PVC you want to modify for example box serial 1 2 frame relay 1 2 boston pvc 1 2 51 and enter wcp control disabled For example the following command line disables compression for PVC 51 pvc 1 2 51 wep control disabled pvc 1 2 51 To reenable compression set this parameter to enable Using Site Manager To use data compression with frame relay first select WCP from the Protocols menu Compression is enabled by default for individual PVCs so you do not have to set the WCP Enable parameter to use compression To disable or reenable data compression complete the following tasks Site Manager Procedure
6. You do this System responds 1 In the Configuration Manager window The Edit Connector window opens click on a port configured for frame relay 2 Click on Edit Circuit The Frame Relay Circuit Definition window opens 3 Click on Services The Frame Relay Service List window opens 4 Click on PVCs The FR PVC List for Service window opens continued 4 26 308624 14 10 Rev 01 Customizing PVCs Site Manager Procedure continued 5 You do this Set the Compression Control parameter Click on Help or see the parameter description on page A 31 System responds 6 Click on Apply 7 Click on Done until you return to the Configuration Manager window Grouping Service Records for Multiline Mode Using Site Manager you can configure two or more service records to run in multiline mode For information about the Nortel Networks proprietary implementation of multiline see Multiline for PVCs on page 1 35 Service records that you group for multiline must Reside on two separate physical ports Have the same DLCI numbers Not use hybrid mode Have all PVCs configured for the same access mode direct or group To configure multiline mode complete the following tasks Site Manager Procedure You do this System responds 1 In the Configuration Manager window choose Protocols The Protocols menu opens Choose Frame Relay The Frame Relay menu open
7. c cccesceeeeeeeeeeeeeeeeeeeeeeeeeeeeeneees 1 6 Figure 1 3 Frame Relay Header 3 and 4 Byte Format ccsccccesseeeeeeeesteeeeeeees 1 6 Figure it 4 Structure of the DLOMI seat socseravieariget eines niarrahu nae naeieynd antes eade 1 7 Figure 1 5 Frame Relay Signaling and LAPF Standards 00 ere ai 1 8 Figure 1 6 Hybrid Mode Configuration Non Fully Meshed Network n se 1 16 Figure 1 7 Example of a Bridged Network 0 cc cccesceeeeeeseceeeeceececeeseaeessaeenaeeeaes 1 17 Figure 1 8 Big Pipa Little Pipe Topology ics ssssackooisdacccncevdncaterivaanceocoriaactecenisantnoopuanek 1 20 Figure 1 9 Detecting and Controlling Network Congestion s es 1 22 Figure 1 10 Taie Shaping QUBUCS siiciicacnscsicecieesivedsmnsesanrsmsannriedeieodiarienndnls 1 26 Figure 1 11 FECNs and BECNs in Big Pipe Little Pipe Topology cceee 1 33 Poure t 12 Mutiline Re as sav sates sds ann isa 1 35 Figure tig PO Pass inougn avcawnucninnmaiecinsrenteonans 1 38 Figure A 1 Frame Relay Interface List Window for PVCs ccsseeeeeseeeeteeeeeeeeeees A 2 Figure A 2 Frame Relay Interface List Window for SVCS c cccceeeeeeeteeetteteees A 3 Figure A 3 FR LAPF Parameters Window cceeeeeeeees ee N Sealants sane AP12 Figure A 4 Frame Relay Signaling Parameters Window sceeeeeeeeeeeeeeeees A 17 Figure A 5 Frame Relay Service List Window for PVCs cccceseeeetteesteeeees A
8. Choose Frame Relay The Frame Relay menu opens 3 Choose Services The Frame Relay Service List window opens Choose the service record that includes the SVC you want to modify Click on SVCs The FR SVC Options List for Service window opens Choose the SVC record whose values for the following parameters match the remote end of the SVC connection Remote Party Number Remote Party Sub Address Remote Party Number Plan Remote Party Type of Number Set the following parameters LL Core Out Throughput LL Core In Throughput LL Core Min Out Throughput e LL Core Min In Throughput LL Core Out Committed Burst LL Core In Committed Burst e LL Core Out Excess Burst LL Core In Excess Burst Click on Help or see the parameter descriptions beginning on page A 50 Click on Apply continued 5 38 308624 14 10 Rev 01 Customizing SVCs Site Manager Procedure continued You do this System responds 9 Click on Done You return to the FR SVC Options List for Service window 10 Click on Done You return to the Frame Relay Service List window 11 Click on Done You return to the Configuration Manager window Disabling and Reenabling Data Compression for SVCs You can use the BCC or Site Manager to disable and reenable data compression for SVCs Using the BCC The wep control parameter specifies whether compression is enabled
9. You do this System responds 1 In the Configuration Manager window choose Protocols The Protocols menu opens 2 Choose Frame Relay The Frame Relay menu opens 3 Choose Interfaces The Frame Relay Interface List window opens 4 Set the following parameters Congestion Control Congestion Timer Congestion Counter Congestion Method applies only when you enable traffic shaping Click on Help or see the parameter descriptions beginning on page A 9 5 Click on Apply 6 Click on Done You return to the Configuration Manager window 308624 14 10 Rev 01 5 29 Configuring Frame Relay Services Configuring Congestion Control for Individual SVCs You can use either the BCC or Site Manager to control congestion for individual SVCs Using the BCC The following sections describe how to configure congestion control for an SVC Congestion Control Congestion control is disabled by default To enable congestion control navigate to the prompt for the SVC you want to modify for example box serial 3 2 frame relay 3 2 service 8 0 32 svc options toronto and enter congestion control enabled The value can be enabled or disabled For example the following command line enables congestion control for this SVC svc options toronto congestion control enabled svc options toronto Congestion Timer To change the value for the congestion timer navig
10. For example if you accept the default of 3 for the error threshold and the default of 4 for monitored events three status exchange errors in a sequence of four attempted exchanges brings the connection down Similarly if you set the error threshold to 5 and monitored events to 10 five status exchange errors in a continuous sequence of 10 attempted exchanges brings the connection down Note The error threshold and monitored events do not function if you set the management type to DLCMI None You can use either the BCC or Site Manager to specify error threshold and monitored events Using the BCC To specify values for the polling interval error threshold full enquiry interval and monitored events see the following sections Polling Interval To set the polling interval navigate to the dlcmi prompt for example box serial 1 2 frame relay 1 2 dicmi and enter polling interval lt integer gt integer is the polling interval from 5 to 30 seconds The default is 10 For example the following command line changes the polling interval from 10 to 20 seconds dlcmi 1 2 polling interval 20 dicmi 1 2 Full Enquiry Interval To set the full enquiry interval navigate to the dlcmi prompt for example box serial 1 2 frame relay 1 2 dicmi and enter full enquiry interval lt integer gt integer is the number of polling intervals that occur before the router sends a full status inquiry The value can be 1 to 25
11. MIB Object ID Site Manager Parameters Congestion Method Configuration Manager select a connector gt Edit Connector window gt Edit Circuit gt Services gt Frame Relay Service List window gt SVCs gt Add Inherit Shutdown Throttle Throttle Then Shutdown Inherit Specifies the method of congestion control Shutdown terminates the VC when congestion occurs Throttle queues traffic when congestion occurs traffic resumes when congestion clears This option is valid only when traffic shaping is enabled Throttle Then Shutdown first queues traffic when congestion occurs and then terminates the VC if throttling does not alleviate congestion This option is valid only when traffic shaping is enabled Inherit uses the value in the Interface Congestion Method parameter Choose a setting appropriate to your network 1 3 6 1 4 1 18 3 5 9 9 10 1 31 Traffic Shaping Disable Configuration Manager select a connector gt Edit Connector window gt Edit Circuit gt Services gt Frame Relay Service List window gt SVCs gt Add Disable Enable Disable Enables or disables traffic shaping on this SVC Set this parameter as follows If you do not want to use traffic shaping on this SVC accept the default Disable and do not set the LL Core parameters To use traffic shaping and accept the QoS the network provides set this parameter to Enable and do not configure the LL Core parameters To use traffic shaping an
12. integer can be a value from 0 to 5000 The default for the interface is 30 The default value for the PVC is 0 inherit which means that the PVC uses the interface s queue limit value Dividing the interface s queue limit by the number of traffic shaped PVCs gives you the number of buffers that the PVC can place into the designated queue If you set the limit to a value other than 0 that value is the number of buffers that the PVC can place into the queue For example to set an interface normal queue limit of 100 navigate to the interface prompt and enter frame relay 1 2 normal queue limit 100 frame relay 1 2 4 22 308624 14 10 Rev 01 Customizing PVCs To set a PVC normal queue limit of 40 navigate to the prompt for the PVC you want to edit and enter pvc 1 2 51 normal queue limit 40 pvc 1 2 51 The syntax is the same for the high and low queue limit commands Committed Burst The committed burst rate B defines the number of bits the router can transmit over a specified time interval when congestion occurs Typically you should set this parameter to 1 4 the value of the CIR However if this VC is sending frames larger than 1 4 of the CIR you should increase the B value to accommodate that frame size You configure this value for each PVC but not for the interface To change the committed burst value navigate to the prompt for the PVC you want to modify for example box serial 1 2 frame relay 1 2
13. Information Limit The information limit is the maximum number of data octets allowed in the LAPF information field The higher the number allowed the less overhead on the system However a high value could exceed the system buffer size You should accept the default value 260 308624 14 10 Rev 01 Customizing SVCs To set the information limit navigate to the lapf prompt for example box serial 1 2 frame relay 1 2 lapf 3 2 and enter information limit lt integer gt integer is the number of octets The value can be from 260 the default to 2052 For example the following command line sets an information limit of 350 lap 3 2 information limit 350 lapf 3 2 Window Size The window size indicates the maximum number of outstanding numbered information I frames allowed across a connection These are frames that have traveled across the link but which the peer has not acknowledged Each of these frames remains in a backup queue until the peer sends an acknowledge message A longer queue adversely affects performance You should accept the default 7 frames To set the window size navigate to the lapf prompt for example box serial 1 2 frame relay 1 2 lapf 3 2 and enter window size lt integer gt integer is the number of outstanding frames allowed The value can be from 1 to 127 The default is 7 For example the following command line sets a window size of 45 lapf 3 2 window size 45 lapf 3 2
14. Monitoring Frame Relay Using the BCC show Command show frame relay multiline services Shows frame relay information for multiline The output contains the following information Multiline Name Interface Service Name Number of VCs show frame relay services Name of the multiline circuit Interface on which the multiline circuit resides Service name associated with the multiline Total number of VCs on the multiline Displays general information about all frame relay services including the number of VCs and SVC configurations This command allows for the following command filters and filter arguments interface lt name gt service lt name gt Displays only frame relay services on the specified interface Displays only frame relay VCs on the specified service record The output includes the following information Interface Service Name Total Number of VCs Number of VCs Static Number of VCs Dynamic Number of VCs SVCs Number of VCs Active Multiline Interface on which the frame relay circuit resides Unique name assigned to the service Total number of VCs configured on this interface Total number of static VCs configured on this interface Total number of PVCs dynamically learned Total number of SVCs configured on this interface Total number of VCs active on this interface Specifies whether the service record is for multiline 308624 14 10 Rev 01 C 5 Configuring Frame Rel
15. Path Default Options Function Instructions MIB Object ID Site Manager Parameters T303 Setup Message Timer Configuration Manager gt Protocols gt Frame Relay gt Interfaces gt Signaling 4 2 to 90 seconds Indicates the number of seconds allowed from the time the router sends a setup message to the called subscriber and receives a connect or call proceeding message from the called subscriber In the event of a timeout the router retransmits the setup message and restarts the timer If the timer expires a second time the call is cleared Enter the timer value for call setup 1 3 6 1 4 1 18 3 5 9 9 9 1 6 T305 Disconnect Timer Configuration Manager gt Protocols gt Frame Relay gt Interfaces gt Signaling 30 20 to 90 seconds Indicates the number of seconds allowed from the time the router sends a disconnect message and receives a release message back This timer is used when this router initiates call clearing In the event of a timeout the router sends a release message and enters the release request state The timer is not restarted Enter the timer value for call clearing 1 3 6 1 4 1 18 3 5 9 9 9 1 7 308624 14 10 Rev 01 Configuring Frame Relay Services Parameter Path Default Options Function Instructions MIB Object ID Parameter Path Default Options Function Instructions MIB Object ID T308 Release Timer Configuration Manager gt Protocols gt Frame
16. 1 5 2 2 5 3 3 5 4 4 5 or 5 seconds The default is 1 second For example the following command line sets a congestion timer of 2 5 seconds pvc 1 2 51 congestion timer 2 5 pvc 1 2 51 308624 14 10 Rev 01 4 19 Configuring Frame Relay Services Congestion Counter To change the value for the congestion counter navigate to the prompt for the PVC you want to modify for example box serial 1 2 frame relay 1 2 orlando pve 1 2 51 and enter congestion counter lt integer gt integer is the maximum number of congestion notifications the router can receive during the congestion timer period before it stops transmitting data The counter value can be from 1 to 500 notifications The default is 20 For example the following command line sets a congestion counter of 30 notifications pvc 1 2 51 congestion counter 30 pvc 1 2 51 Congestion Method To change the value for the congestion method navigate to the prompt for the PVC you want to modify for example box serial 1 2 frame relay 1 2 newyork pvc 1 2 51 and enter congestion method lt value gt value can be throttle then shutdown first queues traffic when congestion occurs and then terminates the VC if throttling does not alleviate congestion This option is valid only when traffic shaping is enabled shutdown the default terminates the VC when congestion occurs throttle queues traffic when congestion occurs traffic resumes when
17. AND WITHOUT ANY EXPRESS OR IMPLIED WARRANTIES INCLUDING WITHOUT LIMITATION THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE In addition the program and information contained herein are licensed only pursuant to a license agreement that contains restrictions on use and disclosure that may incorporate by reference certain limitations and notices imposed by third parties ji 308624 14 10 Rev 01 Nortel Networks NA Inc Software License Agreement NOTICE Please carefully read this license agreement before copying or using the accompanying software or installing the hardware unit with pre enabled software each of which is referred to as Software in this Agreement BY COPYING OR USING THE SOFTWARE YOU ACCEPT ALL OF THE TERMS AND CONDITIONS OF THIS LICENSE AGREEMENT THE TERMS EXPRESSED IN THIS AGREEMENT ARE THE ONLY TERMS UNDER WHICH NORTEL NETWORKS WILL PERMIT YOU TO USE THE SOFTWARE If you do not accept these terms and conditions return the product unused and in the original shipping container within 30 days of purchase to obtain a credit for the full purchase price 1 License Grant Nortel Networks NA Inc Nortel Networks grants the end user of the Software Licensee a personal nonexclusive nontransferable license a to use the Software either on a single computer or if applicable on a single authorized device identified by host ID for which it was originally acquired b to co
18. Any display string Specifies the outbound called party number which is also the inbound calling party number Enter the number 1 3 6 1 4 1 18 3 5 9 9 10 1 7 Remote Party Sub Address Configuration Manager select a connector gt Edit Connector window gt Edit Circuit gt Services gt Frame Relay Service List window gt SVCs gt Add None Any display string Specifies the outbound called party subaddress which is also the inbound calling party subaddress Enter the number 1 3 6 1 4 1 18 3 5 9 9 10 1 8 A 42 308624 14 10 Rev 01 Parameter Path Default Options Function Instructions MIB Object ID Parameter Path Default Options Function Instructions MIB Object ID Site Manager Parameters Remote Party Number Plan Configuration Manager select a connector gt Edit Connector window gt Edit Circuit gt Services gt Frame Relay Service List window gt SVCs gt Add X 121 E 164 X 121 Specifies whether the remote SVC uses the E 164 or X 121 number plan for addresses Choose the numbering plan that applies to your network 1 3 6 1 4 1 18 3 5 9 9 10 1 9 Remote Party Type of Number Configuration Manager select a connector gt Edit Connector window gt Edit Circuit gt Services gt Frame Relay Service List window gt SVCs gt Add International Unknown International Specifies the type of number the remote caller uses If the caller uses an international type
19. Click on Done You return to the Frame Relay Circuit Definition window You return to the Configuration Manager window Then enable multicast for the PVC by completing the following tasks Site Manager Procedure You do this System responds 1 In the Configuration Manager window click on a port configured for frame relay The Edit Connector window opens Click on Edit Circuit The Frame Relay Circuit Definition window opens Click on Services The Frame Relay Service List window opens Click on PVCs The FR PVC List for Service window opens continued 308624 14 10 Rev 01 4 11 Configuring Frame Relay Services Site Manager Procedure continued You do this System responds 5 Set the Multicast parameter to Multicast Click on Help or see the parameter description on page A 27 6 Click on Apply 7 Click on Done until you return to the Configuration Manager window Configuring Hybrid Mode for PVCs Hybrid mode allows you to use the same PVCs for both routing and bridging Using Site Manager you configure hybrid mode by setting the Hybrid Mode parameter to ON To configure hybrid mode complete the following tasks Site Manager Procedure You do this 1 In the Configuration Manager window click on a port configured for frame relay System responds The Edit Connector window opens 2 Click on Edi
20. Displays information about all those frame relay VCs with the specified DLCI This command allows for the following command filters and filter arguments dici lt dlci gt interface lt name gt service lt name gt type pvc dynamic pvc svc state active inactive invalid xoff control starting Displays only frame relay VCs with the specified DLC Displays only frame relay interfaces configured on the specified interface Displays only frame relay VCs on the specified service record Displays information about only those frame relay VCs of type pvc shows only statically configured PVCs dynamic pvc shows only dynamically learned PVCs svc shows only SVCs Displays information about only those VCs in one of the following states e active VC is usable e inactive VC is configured but not active e invalid VC is configured but the switch has not confirmed it xoff VCs are XOFF d control shows only control VCs starting shows VCs that are starting 308624 14 10 Rev 01 C 21 Configuring Frame Relay Services The output includes the following information Interface Interface on which the frame relay circuit resides DLCI Name of the virtual circuit associated with this interface State State of the virtual circuit as follows invalid Circuit is configured but the switch has not confirmed it active Circuit is usable e ina
21. Indicates the maximum number of octets of data allowed in the LAPF information field The larger the number allowed the less overhead on the system However a large value could exceed the system buffer size You should accept the default value Set to the maximum size of the LAPF information field 1 3 6 1 4 1 18 3 5 9 9 7 1 11 K Max Window Size Configuration Manager gt Protocols gt Interfaces gt LAPF 7 1 to 127 Indicates the maximum number of outstanding numbered information I frames allowed across a connection These are frames that have traveled across the link but which the peer has not acknowledged Each of these frames remains in a backup queue until the peer sends an acknowledge message A longer queue adversely affects system performance You should accept the default value Set to the value appropriate for your network 1 3 6 1 4 1 18 3 5 9 9 7 1 12 A 16 308624 14 10 Rev 01 Site Manager Parameters SVC Signaling Parameters If you configure SVCs signaling parameters are important to your network You can modify these parameters in the Frame Relay Signaling Parameters window Cancel OK Values Help Max SYCs T303 Setup Message Timer T305 Disconnect Timer T308 Release Timer T310 Call Proceding Timer T322 Status Enq Retry Timer N322 Status Enq Retry Max Figure A 4 Frame Relay Signaling Parameters Window 308624 14 10 Rev 01 A 17 Configuring Frame Relay Servic
22. Throttle Throttle Then Shutdown Specifies the method of congestion control Shutdown terminates the VC when congestion occurs Throttle queues traffic when congestion occurs traffic resumes when congestion clears This option is valid only when traffic shaping is enabled Throttle Then Shutdown first queues traffic when congestion occurs and then terminates the VC if throttling does not alleviate congestion This option is valid only when traffic shaping is enabled Select a setting appropriate to your network 1 3 6 1 4 1 18 3 5 9 9 1 1 37 308624 14 10 Rev 01 A 11 Configuring Frame Relay Services SVC LAPF Parameters If you configure SVCs the LAPF values in the Frame Relay LAPF Parameters window Figure A 3 are important to your network Cancel OK Values Help Enable ENABLE Station Type USER SIDE Action Initiate ACTIVE T200 Base Timer 15 T203 Idle Timer N200 Max Retries N201 Max Frame Size K Max Window Size Figure A 3 FR LAPF Parameters Window A 12 308624 14 10 Rev 01 Parameter Path Default Options Function Instructions MIB Object ID Parameter Path Default Options Function Instructions MIB Object ID Site Manager Parameters To access the FR LAPF Parameters window complete the following tasks Site Manager Procedure You do this System responds 1 In the Configuration Manager choose Protocols The Protoco
23. Using Site Manager To modify LAPF parameters complete the following tasks Site Manager Procedure You do this System responds 1 In the Configuration Manager window The Protocols menu opens choose Protocols 2 Choose Frame Relay The Frame Relay menu opens 308624 14 10 Rev 01 5 15 Configuring Frame Relay Services Site Manager Procedure continued You do this 3 Choose Interfaces System responds The Frame Relay Interface List window opens Select a service record that has SVC support enabled 5 Click on LAPF The FR LAPF Parameters window opens 6 Set the following parameters Enable Station Type Action Initiate 7200 Base Timer 7203 Idle Timer e N200 Max Retries N201 Max Frame Size K Max Window Size Click on Help or see the parameter descriptions beginning on page A 13 7 Click on OK You return to the Frame Relay Interface List window 8 Click on Done You return to the Configuration Manager window 5 16 308624 14 10 Rev 01 Customizing SVCs Modifying Signaling Parameters for SVCs A DTE and the frame relay network exchange various type of signaling messages including incoming and outgoing call setup call proceeding connect and disconnect and release messages You can use either the BCC or Site Manager to customize signaling parameters Using the BCC You can edit the follo
24. complete the following steps Site Manager Procedure You do this System responds 1 In the Configuration Manager choose The Protocols menu opens Protocols 2 Choose Frame Relay The Frame Relay menu opens 3 Click on Services The Frame Relay Service List window opens continued A 24 308624 14 10 Rev 01 Site Manager Parameters Parameter Path Default Options Function Instructions MIB Object ID Site Manager Procedure You do this System responds 4 Click on PVCs The FR PVC List for Service window opens 5 Click on Add The Frame Relay PVC Add window opens DLCI Number Configuration Manager gt Protocols gt Frame Relay gt Services gt PVCs gt Add None The frame relay switch provider assigns DLCI numbers These assigned numbers are valid options Valid DLCI numbers vary based on the frame relay address length The DLCI numbers that the switch provider assigns are generally in the following ranges 2 byte 16 to 1007 3 byte 1024 to 64511 4 byte 131072 to 4194303 Specifies the PVC identification number that the frame relay network uses to direct data Enter the decimal number that the frame relay provider assigns 1 3 6 1 4 1 18 3 5 9 9 2 1 4 308624 14 10 Rev 01 A 25 Configuring Frame Relay Services PVC Service Record Parameters The FR PVC List for Service window Figure A 7 contains the PVC parameters Initially these
25. e Enable SVC services e Provide an address for the SVC You can also e Enable call screening and blocking e Customize the inactivity timer and mode You can use either the BCC or Site Manager to configure service records for SVCs Using the BCC To use the BCC to configure SVCs you must create a service record and then enable SVC control and specify the SVC local address To configure SVCs navigate to the frame relay prompt for example box serial 1 2 frame relay 1 2 and enter service lt service_name gt lt line_number gt 0 lt circuit_number gt For example the following command line creates the service record 8 0 32 frame relay 1 2 service myservice 8 0 32 myservice 8 0 32 To enable SVC control navigate to the prompt for the service record you just added for example box serial 1 2 frame relay 1 2 service 8 0 32 and enter svc control enabled The default is disabled For example the following command line enables SVCs on this service record myservice 8 0 32 svc control enabled myservice 8 0 32 5 2 308624 14 10 Rev 01 Customizing SVCs Finally configure the local address for the service record you just added for example box serial 1 2 frame relay 1 2 service 8 0 32 To do so enter svc local address lt address gt address can be any valid X 121 or E 164 format address For example the following commands specify a local address in X 121 or E 164 format myservic
26. gt Frame Relay gt Services Disable Enable Disable Allows you to screen incoming calls on this SVC If you do not want to screen incoming calls accept the default Disable To screen calls choose Enable 1 3 6 1 4 1 18 3 5 9 9 5 1 23 A 38 308624 14 10 Rev 01 Parameter Path Default Options Function Instructions MIB Object ID Parameter Path Default Options Function Instructions MIB Object ID Site Manager Parameters SVC InScreening Usage Configuration Manager gt Protocols gt Frame Relay gt Services Include Include Exclude Enables you to allow or disallow calls from numbers in associated SVC option records To allow these calls accept the default Include Choose Exclude to disallow them 1 3 6 1 4 1 18 3 5 9 9 5 1 24 SVC Inactivity Timer Configuration Manager gt Protocols gt Frame Relay gt Services 60 0 to 2147483647 seconds Specifies the amount of time in seconds before the SVC terminates because no data has travelled over the circuit in the direction you specify in the Inactivity Mode parameter If you want to set the timer to 1 minute accept the default Otherwise specify another value within the allowable range 1 3 6 1 4 1 18 3 5 9 9 5 1 25 308624 14 10 Rev 01 A 39 Configuring Frame Relay Services Parameter Path Default Options Function Instructions MIB Object ID SVC Inactivity Mode Configuration Manager
27. or release complete message If a timeout occurs the router retransmits the status inquiry and restarts the timer This occurs for the number of times set by the status enquiry retry parameter after which the router clears the call To set the status enquiry timer navigate to the signalling prompt for example box serial 1 2 frame relay 1 2 signalling 3 2 and enter status enquiry timer lt integer gt integer is the number of seconds allowed The value can be from 2 to 90 seconds The default is 4 For example the following command line sets a timer of 30 seconds signalling 3 2 status enquiry timer 30 signalling 3 2 5 20 308624 14 10 Rev 01 Customizing SVCs Status Enquiry Retry The status enquiry retry indicates the maximum number of times the router will retransmit a status inquiry message If the router sends the maximum number of status inquiry messages and receives no response the router clears the call To set the status enquiry retry navigate to the signalling prompt for example box serial 1 2 frame relay 1 2 signalling 3 2 and enter status enquiry retry lt integer gt integer is the number of retries The value can be from 1 to 20 retries The default is 4 For example the following command line sets a value of 7 retries signalling 3 2 status enquiry retry 7 signalling 3 2 Using Site Manager To edit signaling parameters complete the following tasks Site Manager Procedure
28. 2 Navigate to the default service prompt The BCC context changes to the default service record For example frame relay 1 2 default service default service 1 2 Enter the pvc dici lt va ue gt command The service provider supplies the data link connection identifier DLCD which uniquely identifies this PVC For example default service 1 2 pve dlici 16 pvc 1 2 16 You have added a PVC to the default service record Repeat this procedure to add more PVCs according to your network requirements 2 4 308624 14 10 Rev 01 Using Site Manager To configure a PVC Starting Frame Relay Site Manager Procedure You do this System responds 1 In the Configuration Manager window choose Protocols The Protocols menu opens Choose Frame Relay The Frame Relay menu opens Choose Services The Frame Relay Service List window opens Choose PVCs The FR PVC List for Service window opens Choose Add The Frame Relay PVC Add window opens Set the DLCI Number parameter Click on Help or see the parameter description on page A 25 Click on Done You return to the FR PVC List for Service window 8 Add more PVCs as your network requires 9 Click on Done until you return to the Configuration Manager window 308624 14 10 Rev 01 2 5 Configuring Frame Relay Services Configuring an SVC You can configure SVCs using either t
29. 213 Gain Priority parameter A 48 X 213 Keep LQA Priority parameter A 49 X 213 Keep Priority parameter A 49 X 213 priority configuring 5 41 description 1 33 XOFF bit configuring 3 4 Index 6 308624 14 10 Rev 01
30. Configuration Manager gt Protocols gt Frame Relay gt Interfaces gt Signaling 4 2 to 90 seconds Indicates the number of seconds allowed from the time the router sends a status inquiry message to the time the router receives an incoming status disconnect release or release complete message If a timeout occurs the router retransmits the status inquiry and restarts the timer This occurs for the number of times set in the N322 Status Eng Retry Max parameter after which the call will be cleared Enter the timer value for status inquiries 1 3 6 1 4 1 18 3 5 9 9 9 1 10 N322 Status Enq Retry Max Configuration Manager gt Protocols gt Frame Relay gt Interfaces gt Signaling 4 1 to 20 Indicates the maximum number of times the router will retransmit a status inquiry message If the router sends the maximum number of status inquiry messages and receives no response the call is cleared Enter a value for status inquiry retries 1 3 6 1 4 1 18 3 5 9 9 9 1 11 308624 14 10 Rev 01 A 21 Configuring Frame Relay Services Service Name Parameter The Frame Relay Service List window Figure A 5 contains the Service Name parameter which identifies a service record LS Done FR Slot 2 COM1 Cct 1 Default FR Slot 2 COM1 Cct 6 Delete FR Slot 2 COM3 Cct 5 Default FR Slot 4 COM2 Cct 8 Default PVCs FR Slot 5 COM1 Cct 7 Default BOTH Lane Apply Values Help Service Name 202103 0
31. Connection s TT T T retan aeei T R E T Poin PO sca asa bapa a aca aap dened Sada Gama sae Loca a daa 3 7 Fu Ei MET nmaa a iprenbiasts oboigiiats 3 8 Error Threshold and Monitored Events ccccisscscecccanssocetmnsiecescmmsaccnennvucodtanvonteraniie 3 8 RE a EE AA A AT AA A T ee Full Enquiry Interval EE EE arohia iipasi PAT errr Adenia Gaiei A Eror TESNO asiaa 3 10 kontoret Eveni oaingo 3 10 Deleting Frame Relay PNT PR means RRN A eee HUR 3 12 Chapter 4 Customizing PVCs Configuring PVCs Using the BCC or Site Manager ET oaii kaa esse 4 2 Adding Semice RECOGE racemiriioinaiaseo o aeaa aa a aaa 4 3 Deleting Service Records asc asssssiicanuriianurinn maine baai Rie 4 4 Adding PVCs to Service Records mng PE EE eendi er eee 4 5 308624 14 10 Rev 01 vii Deleting P Gs from Service Records irs csscscecersaivee ledinteias nil nda i inin 4 7 Moving PVCs from One Service Record to Another cer T T ARRU en 4 9 Enabing NRC oi ce sessed es constpccevseisecauveniserccnivaadycaedeatpenav ema caveeae leanne Eai 4 10 Coniguring Hybrid Mode for PY OS sic aisu iscsi sp iietereoiuunieiuerianisteedeinniods 4 12 Configuring PVC Pass Through sses P E PE E ere ane 4 13 Configuring Pass Through PCS occa inaaniconiiraentimmneninandae be Mapping Fase Through PYE sisirin ianea battens 4 14 Controlling Congestion fot PYCE sorsien naa aiaa a es Gaeveaes 4 15 Configuring Congestion Control fo
32. Frame Relay menu opens 3 Click on Services The Frame Relay Service List window opens You must enable the SVC Support parameter before you can modify the SVC parameters Service Name Configuration Manager gt Protocols gt Frame Relay gt Services None lt line_number gt 0 lt circuit_number gt Identifies the service record Site Manager assigns a unique name in the given format There is no need to change this value 1 3 6 1 4 1 18 3 5 9 9 5 1 7 SVC Support Configuration Manager gt Protocols gt Frame Relay gt Services Disable Enable Disable Enables or disables support for SVCs on this interface If you want to configure SVCs on this interface select Enable Otherwise accept the default Disable 1 3 6 1 4 1 18 3 5 9 9 5 1 17 A 36 308624 14 10 Rev 01 Parameter Path Default Options Function Instructions MIB Object ID Parameter Path Default Options Function Instructions MIB Object ID Parameter Path Default Options Function Instructions MIB Object ID Site Manager Parameters SVC Local Party Number Configuration Manager gt Protocols gt Frame Relay gt Services None Any display string Specifies the outbound calling party number which is also the inbound called party number Enter the number 1 3 6 1 4 1 18 3 5 9 9 5 1 18 SVC Local Party Sub Address Configuration Manager gt Protocols gt Frame Relay gt Service
33. Remote Party Number Plan x 121 Remote Party Type of Number INTERNATIONAL Figure A 11 Frame Relay SVC Options Add Window To access the Frame Relay SVC Options Add window complete the following tasks Site Manager Procedure You do this System responds 1 Click on the Protocols menu in the The Protocols menu opens Configuration Manager menu bar 2 Click on Frame Relay The Frame Relay menu opens 3 Click on Services The Frame Relay Service List window opens 4 Click on SVCs The FR SVC Options List for Service window opens 5 Click on Add The Frame Relay SVC Options Add window opens 308624 14 10 Rev 01 A 41 Configuring Frame Relay Services Parameter Path Default Options Function Instructions MIB Object ID Parameter Path Default Options Function Instructions MIB Object ID Parameter Path Default Options Function Instructions MIB Object ID Options Name Configuration Manager gt Protocols gt Frame Relay gt Services gt SVCs gt Add None lt line_number gt 0 lt circuit_number gt Identifies the options record Site Manager assigns a unique name in the given format There is no need to change this value 1 3 6 1 4 1 18 3 5 9 9 10 1 34 Remote Party Number Configuration Manager select a connector gt Edit Connector window gt Edit Circuit gt Services gt Frame Relay Service List window gt SVCs gt Add None
34. Rev 01 B 1 c a LO A94 Ort L Yz980 Table B 1 RIP Parameters IP or IPX RIP Frame Relay Frame Relay IP or IPX SVC Broadcast SVC Inactivity Inactivity Timer Inactivity Timer RIP Enable Enable Timer Mode RIP Timer RIP Timer Functionality Functionality Enabled Enabled Both Directions Inactivity gt RIP When the RIP timer expires RIP packets will refresh the e RIP packets will be sent transmit inactivity timer any over connected SVCs connected SVCs will not e Any SVCs configured as disconnect due to inactivity adjacent hosts that are not connected will connect to send RIP packets Enabled Disabled Both Directions Inactivity gt RIP When the RIP timer expires RIP packets will refresh the e RIP packets will be sent transmit inactivity timer any over connected SVCs connected SVCs will not e Any SVCs configured as disconnect due to inactivity adjacent hosts that are not connected will remain disconnected SVCs will not connect and will not send RIP packets Enabled Enabled Both Directions Inactivity lt RIP When the RIP timer expires If no non RIP packets are e RIP packets will be sent over connected SVCs e Any SVCs configured as adjacent hosts that are not connected will connect to send RIP packets transmitted and no packets are received within the inactivity timer interval the SVC disconnects continued S8dIMaS Aejay swes4 BuunbyuoD LO A8Y OL V
35. UNDERSTANDS IT AND AGREES TO BE BOUND BY ITS TERMS AND CONDITIONS LICENSEE FURTHER AGREES THAT THIS AGREEMENT IS THE ENTIRE AND EXCLUSIVE AGREEMENT BETWEEN NORTEL NETWORKS AND LICENSEE WHICH SUPERSEDES ALL PRIOR ORAL AND WRITTEN AGREEMENTS AND COMMUNICATIONS BETWEEN THE PARTIES PERTAINING TO THE SUBJECT MATTER OF THIS AGREEMENT NO DIFFERENT OR ADDITIONAL TERMS WILL BE ENFORCEABLE AGAINST NORTEL NETWORKS UNLESS NORTEL NETWORKS GIVES ITS EXPRESS WRITTEN CONSENT INCLUDING AN EXPRESS WAIVER OF THE TERMS OF THIS AGREEMENT 308624 14 10 Rev 01 Contents Preface PSY RUUD ac cactait aac E tours nets cua ulad E E E A eat akiy xvii WTOC AES ccs sc cos eat e E xviii PO E sscsricedasthantaanaustsiaee date eee EES xix Hard Copy Technical BS BS isi csssuiscra sad eniete cieasarataorsnedaioisu aaa Saa a aain xxi Fon to Ger HEI sraonadh a a a a xxii Chapter 1 Frame Relay Overview Mroducton O Frame Roly arnan see pin rerrern er ereeeet er ior reer ne tereer ree re 1 2 Permanent Virita Cred caconwinosua imine tiation 1 3 SOUT e EEEa A canis A E E E rssh cedonn AOA E T 1 3 PYG and SYC CONDA ON npc tasers aea ca cee ie r aE Seeder eed 1 4 Poma Roy Cs aaa Seventeen pan pees PARES 1 5 SFeAPWOeCIRSNVAGHIOL Ir PONCE cart ccenditan ns honacescoataene pea oupel cenlanmueh asoanenen cea sdeaeteeendtante aaaapeRenanMaGES 1 7 Frame Relay SYC Signaling and LAPF csccsctcscccasscsleistesceeciaanieesaietaeedcieteumidinaasinbaasonnne 1 8 LAPF Operi onal PRS sain
36. VC1 Shaped VC2 Normal VCs SNA Telnet IPX SNA IPX FTP High Normal Low Normal Low SNA ca IP nd LMI Shaping High Normal Low Interrupt Transmit queue Attached media FROOI4A Figure 1 10 Traffic Shaping Queues 1 26 308624 14 10 Rev 01 Frame Relay Overview All traffic that goes to a traffic shaped VC VC1 or VC2 is queued as high normal or low priority at the VC level and then it travels by priority order to a shaping queue within the driver Normal VC traffic is queued as high normal or low priority at the driver level At the driver level e Interrupt priority traffic DLCMI LMI requests the LMI box in Figure 1 10 has the highest priority You cannot change this e Shaped priority traffic the Shaping box in Figure 1 10 has the second highest priority e Normal VC traffic not shaped has lower priority than shaped traffic You can still prioritize normal VC traffic as high normal or low Queuing and prioritization only matter when the traffic rate exceeds the VC line rate or the CIR If the total of all traffic is below the CIR the router just transmits it You cannot prioritize between VCs on which you have enabled traffic shaping The router schedules traffic among them in a round robin manner For information about configuring filters for protocol prioritization see Configuring Traffic Filters and Protocol Prioritization Traffic Shaping for SVCs Traffic shaping
37. a value of 16 Normal Call Clearing continued 308624 14 10 Rev 01 Configuring Frame Relay Services Table 1 4 Message Processing continued Message Type Message Processing Release Under normal call clearing conditions the network passes the disconnect message through the network to the remote subscriber The subscriber receiving this disconnect message responds with a release message The network validates the release message and passes it to the local subscriber Release complete Once the network receives a release message from the subscriber and verifies it the network returns a release complete message to the subscriber After receiving the release message from the network the subscriber responds with a release complete message Frame Relay Service Records The router software uses service records to define frame relay circuits A service record is a data structure that allows flexible grouping and characterization of VCs A service record can contain a single PVC or SVC multiple PVCs or SVCs or a combination of PVCs and SVCs Service records e Simplify network addressing for VCs because you define and associate only one protocol address with groups of frame relay VCs e Allow multiple groups of VCs per frame relay interface e Enable you to group multiple VCs for each network protocol into separate service records thereby reducing the number of buffers needed per circuit d
38. aaynaash sav ens Gaus unsain ea aAA danas Ea E A ie 1 9 LAPF Timeout and Retransmission Timers 05 eines eels re seen eae t10 TIRO To sci aise zea thas dasa beinas aa saan apa teases S 1 10 Toar bok Meee renee S Treen cr tre 1 11 eA Pe e a E E E E E E E E E E 1 11 eal UNG cetera rnaraurnayria A panieial seaman 1 11 Message Processing rere T ae P E E T P E aa 1113 Frame Relay Service Regord ssc doccistecdScdtcetncaccehendccteaatersuavbbedcaatatiednantraee Gadeneletalvess 1 14 Deian Service TRC ONG arisoomiac an aa a 1 14 IRI BIG serice Recorda racnt eE EET 1 15 POG amd Moving P YGS cist sanirescsnaveniaanestigandiianass pas neiaainiines 1 15 Fame Relay Access Modos iipccties unsaskss Socusuecess cubudsmeagsuecie daxaduatodkanuesd aE ESAS 1 15 Group Acess MOE aicea a ee i aS roaa 1 15 308624 14 10 Rev 01 v Direct Access Mode rcensavna aa a aaa Lene Hybrid Access Mode ccsccccesssteeeeesssteeeeesenaes ere oraa sun rate ere w 116 Using Hybrid Mode for Tenseniant Bridging P A A 1 17 SOUS FRONI an a 1 18 RFG P90 ccicaccomarantseneee apadi o ectoneanecetaid P epai 1 18 Address Resolution for PYG asnasinun anna 1 18 Addresse RSS OMIT Tor OVCE ironin kanando asaan naan naes aaia anid 1 19 MAE COMPO ocsigen E E 1 19 REER NIJI SII EEPE T T hee AE e E E A 1 20 Data Encryption PE P porpbaa rippus E T jaiai Peer ree shiseitines 1 21 PROTOCOL PHOMUIZANON sccascesactcmnsndccemismecctecaneenacesanseccdedeanmmndes s
39. alleviate congestion This option is valid only when traffic shaping is enabled shutdown the default terminates the VC when congestion occurs throttle queues traffic when congestion occurs traffic resumes when congestion clears This option is valid only when traffic shaping is enabled For example the following command line sets a congestion method of throttle frame relay 1 2 congestion method throttle frame relay 1 2 308624 14 10 Rev 01 4 17 Configuring Frame Relay Services Using Site Manager To enable congestion control for the interface complete the following tasks Site Manager Procedure You do this System responds 1 In the Configuration Manager window click on a port configured for frame relay The Edit Connector window opens Click on Edit Circuit The Frame Relay Circuit Definition window opens Click on Interfaces The Frame Relay Interface List window opens Set the following parameters Congestion Control Congestion Timer Congestion Counter e Congestion Method applies only when you enable traffic shaping Click on Help or see the parameter descriptions beginning on page A 9 5 Click on Apply 6 Click on Done You return to the Frame Relay Circuit Definition window Click on Done You return to the Configuration Manager window Configuring Congestion Control for Individual PVCs You can use either the
40. and click on Remove interface 6 Click on Done You return to the Frame Relay Service List window 7 Click on Done You return to the Configuration Manager window 4 28 308624 14 10 Rev 01 Chapter 5 Customizing SVCs When you enable frame relay default values are in effect for all parameters Depending on your network requirements you may want to change these values The following sections describe how to customize frame relay for your network Topic Page Adding Service Records for SVCs 5 2 Deleting Service Records for SVCs 5 4 Call Screening and Blocking 5 5 Adding SVC Options to Service Records 5 7 Disabling SV 5 9 Disconnecting Active SVCs 5 10 Modifying LAPF Parameters for SVCs 5 11 Modifying Signaling Parameters for SVCs 17 Setting Inactivity Values for SVCs 5 22 Individual SVC Inactivity Values 5 24 Controlling Congestion for SVCs 5 26 Using Traffic Shaping with SVCs 5 33 Disabling and Reenabling Data Compression for SVCs 5 39 Setting X 213 Priorities for SVCs 5 41 You can perform each of these tasks using either the BCC or Site Manager 308624 14 10 Rev 01 5 1 Configuring Frame Relay Services Adding Service Records for SVCs A service record is a data structure that allows flexible grouping and characterization of VCs To configure service records for SVCs you e Provide a name for the service record
41. clause of DFARS 252 227 7013 for agencies of the Department of Defense or their successors whichever is applicable 6 Use of Software in the European Community This provision applies to all Software acquired for use within the European Community If Licensee uses the Software within a country in the European Community the Software Directive enacted by the Council of European Communities Directive dated 14 May 1991 will apply to the examination of the Software to facilitate interoperability Licensee agrees to notify Nortel Networks of any such intended examination of the Software and may procure support and assistance from Nortel Networks 7 Term and termination This license is effective until terminated however all of the restrictions with respect to Nortel Networks copyright in the Software and user manuals will cease being effective at the date of expiration of the Nortel Networks copyright those restrictions relating to use and disclosure of Nortel Networks confidential information shall continue in effect Licensee may terminate this license at any time The license will automatically terminate if Licensee fails to comply with any of the terms and conditions of the license Upon termination for any reason Licensee will immediately destroy or return to Nortel Networks the Software user manuals and all copies Nortel Networks is not liable to Licensee for damages in any form solely by reason of the termination of this license 8 E
42. congestion clears This option is valid only when traffic shaping is enabled inherit specifies that this VC will use the value of the interface s congestion method setting For example the following command line sets a congestion method of throttle pvc 1 2 51 congestion method throttle pvc 1 2 51 4 20 308624 14 10 Rev 01 Using Site Manager Customizing PVCs To modify congestion control for individual PVCs complete the following tasks Site Manager Procedure You do this System responds 1 In the Configuration Manager window click on a port configured for frame relay The Edit Connector window opens Click on Edit Circuit The Frame Relay Circuit Definition window opens Click on Services The Frame Relay Service List window opens Click on PVCs The FR PVC List for Service window opens 5 Select a PVC 6 Set the following parameters Congestion Control Congestion Timer Congestion Counter Congestion Method applies only when you enable traffic shaping Click on Help or see the parameter descriptions beginning on page A 29 7 Click on Apply 8 Click on Done until you return to the Configuration Manager window Using Traffic Shaping Traffic shaping relieves bottlenecks in networks You enable traffic shaping by configuring the queue limits committed burst excess burst and CIR throughput parameters To
43. e Any SVCs configured as disconnects adjacent hosts that are not connected will connect to send RIP packets Enabled Disabled Transmit Inactivity lt RIP When the RIP timer expires If no non RIP packets are e RIP packets will be sent transmitted within the inactivity over connected SVCs timer interval the SVC e Any SVCs configured as disconnects adjacent hosts that are not connected will remain disconnected SVCs will not connect and will not send RIP packets Disabled Enabled or Transmit RIP timer not Not applicable RIP is If no packets are transmitted Disabled applicable RIP disabled within the inactivity timer is disabled interval the SVC disconnects continued SOAS Aejoy ewes 104 JuUswWabeueYY dIY 9 4 LO A94 OL Vl 7e980E Table B 1 RIP Parameters continued IP or IPX RIP Frame Relay Frame Relay IP or IPX SVC Broadcast SVC Inactivity Inactivity Timer Inactivity Timer RIP Enable Enable Timer Mode RIP Timer RIP Timer Functionality Functionality Enabled Enabled Receive Inactivity gt RIP When the RIP timer expires If no packets are received e RIP packets will be sent within the inactivity timer over connected SVCs interval the SVC disconnects e Any SVCs configured as adjacent hosts that are not connected will connect to send RIP packets Enabled Disabled Receive Inactivity gt RIP When the RIP timer expires If no packets are received e RIP pack
44. gt Services gt PVCs Unicast Unicast Multicast Indicates whether this PVC is multicast or unicast Set to Unicast or Multicast according to PVC type as the frame relay switch provider instructs 1 3 6 1 4 1 18 3 5 9 9 2 1 19 308624 14 10 Rev 01 A 27 Configuring Frame Relay Services Parameter Path Default Options Function Instructions MIB Object ID Parameter Path Default Options Function Instructions MIB Object ID Parameter Path Default Options Function Instructions MIB Object ID Hybrid Mode Configuration Manager gt Protocols gt Frame Relay gt Services gt PVCs OFF ON OFF Allows you to use the same PVC for both routing and bridging If you do not want to enable both routing and bridging services accept the default OFF If you do want to enable both routing and bridging set to ON 1 3 6 1 4 1 18 3 5 9 1 2 1 24 Committed Burst Configuration Manager gt Protocols gt Frame Relay gt Services gt PVCs 0 0 to 2147483647 bits The maximum number of bits that a VC can transmit during the VC s burst period Tc when congestion is occurring To enable traffic shaping this parameter and the Throughput parameter CIR must both be greater than zero The Committed Burst Bc value should be lower than the Throughput Enter a value within the given range You should set this parameter to 1 4 of the CIR unless this VC is sending frames larger than that
45. must be set to values greater than zero Choose a value appropriate to your network 1 3 6 1 4 1 18 3 5 9 9 10 1 23 LL Core Out Committed Burst Configuration Manager gt Protocols gt Frame Relay gt Services gt SVCs 0 0 to 21447463647 b s Specifies the outgoing committed burst size This is the maximum number of bits that a VC can transmit during the VC s burst period Tc when congestion is occurring To enable traffic shaping this parameter and the Throughput parameter CIR must both be greater than zero The Core Out Committed Burst Bc value should be lower than the Core Out Throughput value Choose a value appropriate to your network 1 3 6 1 4 1 18 3 5 9 9 10 1 24 308624 14 10 Rev 01 Configuring Frame Relay Services Parameter Path Default Options Function Instructions MIB Object ID Parameter Path Default Options Function Instructions MIB Object ID LL Core In Committed Burst Configuration Manager select a connector gt Edit Connector window gt Edit Circuit gt Services gt Frame Relay Service List window gt SVCs gt Add 0 0 to 21447463647 b s Specifies the incoming committed burst size This is the maximum number of bits that a VC can receive during the VC s burst period Tc when congestion is occurring To enable traffic shaping the Burst parameters and the Throughput parameters CIR must be greater than zero The Core In Committed Burst Bc value shoul
46. occurs the router retransmits the setup message and restarts the timer If the timer expires a second time the router clears the call To set the setup timer navigate to the signalling prompt for example box serial 1 2 frame relay 1 2 signalling 3 2 and enter setup timer lt nteger gt integer is the number of seconds allowed The value can be from 2 to 90 seconds The default is 4 For example the following command line sets a timer of 10 seconds signalling 3 2 setup timer 10 signalling 3 2 5 18 308624 14 10 Rev 01 Customizing SVCs Disconnect Timer The disconnect timer indicates the number of seconds allowed from the time the router sends a disconnect message and receives a release message back If a timeout occurs the router sends a release message and enters the release request state The timer is not restarted To set the disconnect timer navigate to the signalling prompt for example box serial 1 2 frame relay 1 2 signalling 3 2 and enter disconnect timer lt integer gt integer is the number of seconds allowed The value can be from 20 to 90 seconds The default is 30 For example the following command line sets a timer of 45 seconds signalling 3 2 disconnect timer 45 signalling 3 2 Release Timer The release timer indicates the number of seconds allowed for call clearing initiated by the other end of the connection or when the disconnect timer expires If a timeout occurs the rou
47. or disabled for an SVC By default compression is enabled To disable compression for an SVC navigate to the prompt for the SVC you want to modify for example box serial 3 2 frame relay 3 2 service 8 0 32 svc options toronto and enter wcp control disabled For example the following command line disables compression for this SVC svc options toronto wep control disabled svc options toronto To reenable compression set this parameter back to enable 308624 14 10 Rev 01 5 39 Configuring Frame Relay Services Using Site Manager To enable data compression for SVCs first select WCP from the Protocols menu Compression is enabled by default for individual SVCs so you do not have to set the WCP Enable parameter to use compression For more information about WCP see Configuring Data Compression Services To disable or reenable compression complete the following tasks Site Manager Procedure You do this System responds 1 In the Configuration Manager window choose Protocols The Protocols menu opens Choose Frame Relay The Frame Relay menu opens 3 Choose Services The Frame Relay Service List window opens Choose the service record that you want to configure for compression Click on SVCs The FR SVC Options List for Service window opens Choose the SVC record whose values for the following parameters match the remote end of the SVC connection Remote
48. parameters are set automatically when you add a PVC but you can modify them fm FR PVC List for Service 205103 0 7 x Done Add Delete Apply Values Help X 4 gt INVALID UNICAST OFF Figure A 7 FR PVC List for Service Window A 26 308624 14 10 Rev 01 Parameter Path Default Options Function Instructions MIB Object ID Parameter Path Default Options Function Instructions MIB Object ID Site Manager Parameters To access the FR PVC List for Service window Site Manager Procedure You do this System responds 1 In the Configuration Manager choose Protocols The Protocols menu opens 2 Choose Frame Relay The Frame Relay menu opens 3 Click on Services The Frame Relay Service List window opens The FR PVC List for Service window opens 4 Click on PVCs Circuit State Set Configuration Manager gt Protocols gt Frame Relay gt Services gt PVCs Invalid Invalid Active Inactive Specifies the state of the PVC To indicate to a frame relay switch that the PVC is available for use set to Active To indicate that the PVC is configured but not available for use for example before your switch provider actually activates the PVC set to Inactive If the PVC is configured but the switch is unaware of it choose Invalid 1 3 6 1 4 1 18 3 5 9 9 2 1 7 Multicast Configuration Manager gt Protocols gt Frame Relay
49. proprietary intellectual property Licensee shall not sublicense assign or otherwise disclose to any third party the Software or any information about the operation design performance or implementation of the Software and user manuals that is confidential to Nortel Networks and its licensors however Licensee may grant permission to its consultants subcontractors and agents to use the Software at Licensee s facility provided they have agreed to use the Software only in accordance with the terms of this license 3 Limited warranty Nortel Networks warrants each item of Software as delivered by Nortel Networks and properly installed and operated on Nortel Networks hardware or other equipment it is originally licensed for to function substantially as described in its accompanying user manual during its warranty period which begins on the date Software is first shipped to Licensee If any item of Software fails to so function during its warranty period as the sole remedy Nortel Networks will at its discretion provide a suitable fix patch or workaround for the problem that may be included in a future Software release Nortel Networks further warrants to Licensee that the media on which the Software is provided will be free from defects in materials and workmanship under normal use for a period of 90 days from the date Software is first shipped to Licensee Nortel Networks will replace defective media at no charge if it is returned to Nortel Netwo
50. relatively few data packets and therefore few BECNs and is unaware that congestion is occurring 1 32 308624 14 10 Rev 01 Frame Relay Overview Flow of most traffic Remote site B _ gt oo sZ BECNs few ce lt ee Remote site C n vea Se ee man Ee Central site A 2 g Soy Remote site D S CE N FR0015A Figure 1 11 FECNs and BECNs in Big Pipe Little Pipe Topology You may need to modify the congestion counter and the congestion timer from the default values of 20 FECN or BECN counts per second to for example 10 counts per 5 seconds to account for the differences in traffic volume to and from the central site X 213 Priority for SVCs Some frame relay networks that support SVCs can prioritize SVC data and connection characters by setting X 213 priority parameters You configure values for these parameters at the router and the frame relay network uses them For instructions on configuring X 213 parameters see Setting X 213 Priorities for SVCs on page 5 41 Inactivity Timing for SVCs The inactivity timer and inactivity timer mode features combine to automatically disconnect an SVC according to values that you configure for amount of time and the direction that data is flowing over the SVC You can configure these parameters to apply to all SVCs in a service record an
51. relay networks Address Resolution for PVCs Address resolution for PVCs maps a remote network address such as an IP address to a local DLCI number For most protocols that you configure for a frame relay interface the router performs address resolution automatically However IP AppleTalk and VINES use the Address Resolution Protocol ARP ARP dynamically generates an ARP table of addresses and DLCI numbers by sending messages back and forth to each network node to gather address information This process increases broadcast traffic across the network To reduce broadcast traffic for all protocols you can configure static routes and adjacent hosts at the protocol level This eliminates the need for the router to perform address resolution To reduce traffic associated specifically with VINES address resolution you can configure Inverse ARP Inverse ARP is the default for IP over frame relay Refer to the appropriate protocol manual for more information about static routes adjacent hosts and Inverse ARP Table 1 5 lists how the router handles address resolution for each protocol and whether you can reduce broadcast traffic by modifying the address resolution configuration 308624 14 10 Rev 01 Frame Relay Overview Table 1 5 How Protocols Handle Address Resolution Protocol How Router Performs Address Resolution Configuration Requirements Bridge including source route Automatic None IP AR
52. ren ren rer nearer tere ett terre rrr Tre rre ttre rere ree cprrrrrette 5 5 SVC Call Block Direction PE aes EE E T Seecpenneetes 5 5 BS UC PIII E aden cancaecctaanie dice dened scueanaeedaus E E A E R 5 6 I I cass asians fash E E E E A E E E TT 5 6 Adding SVC Options to Service Records T PT aula janan EET Parr 4 viii 308624 14 10 Rev 01 Disabling SVOE niicnrieaecateninleh wan apoE wae ASR Acie SVOE conei asuran tiana as kaAi DAANA 5 10 Modiiying LAPF Parameters tor SV OS sssssideissmiicdai ania aaar aaa 5 11 E a N A 5 12 Station Type Aumann are P PA eee ete aes 5 12 ATROPINE cccccccscccacscantege scenbiedaceaatie pease onaee iat tnnegietedaung E EE 5 13 POTOSI E E EEA sudan dds iansdbon sad Vnusibsestiadll 5 13 lile TMar wiscsssececasesennieds A T masi noran anne seein ere re i 0 14 PecaW ENT Fes E E P I E E E T EP mies see I E 5 14 kormanon LII pirri a ca ccauean Shimane se teased 5 15 WOI DIZE serion niana aE E EEE E AE 5 15 Modifying Signaling Parameters for SVCS nesrin N 5 17 SHAG asuinn E E E E E E E E ee 5 17 en EEA E E E E E E E E E E T 5 18 SENP TE F aa a Ai 5 18 Disconnect Timer esses PTE spe E EE E E E 5 19 POLSET iaa anna nano eae 5 19 Fall POSS TIEI soinis scsi adivina ka Ena a Na 5 20 COMS Endy TOF ease E de chee gece 5 20 AUS En GUT iaa EANA ANEAN 5 21 Setting Inactivity Values for SVCS esceeeeeeeteeeeeees EEE E EE E 5 22 Semice Record Inachvity Valige misreport 5 22 dividual SV
53. service 8 0 32 svc options toronto 308624 14 10 Rev 01 5 7 Configuring Frame Relay Services Using Site Manager To add SVCs to existing service records complete the following tasks Site Manager Procedure You do this System responds 1 In the Configuration Manager window choose Protocols The Protocols menu opens Choose Frame Relay The Frame Relay menu opens Choose Services The Frame Relay Service List window opens Select the service record to which you want to add SVCs and set the SVC Support parameter to Enable Click on Help or see the parameter description on page A 36 The SVC parameters become available Set the following parameters SVC Local Party Number SVC Local Party Sub Address optional SVC Local Party Number Plan SVC Local Party Type of Number Click on Help or see the parameter descriptions beginning on page A 37 Click on Apply The SVC button replaces the Multiline button in the Frame Service List window Click on SVCs The FR SVC Options List for Service window opens Click on Add The Frame Relay SVC Options Add window opens Set the following parameters Remote Party Number Remote Party Sub Address Remote Party Number Plan Remote Party Type of Number Click on Help or the see the parameter descriptions beginning on page A 42 10 Click on OK You return to the FR SVC Options Li
54. subscriber DTE and the network This protocol is described in the sections that follow The timers used in this process are summarized in Table 1 3 Note that the Timer column in Table 1 3 lists the Site Manager parameter name for the timer 308624 14 10 Rev 01 1 11 Configuring Frame Relay Services Table 1 3 Network Timers Default Timeout At First At Second Timer secs State of Call Cause for Start Normal Stop Expiration Expiration T303 4 Call present Outgoing setup Incoming connect Retransmit setup Call cleared message call proceeding or message restart release message timer T303 T305 30 Disconnect Outgoing Incoming disconnect Network sends Timer not indication disconnect or release message release message restarted message T308 4 Release Outgoing Incoming release or Retransmit Call cleared request release release complete release message timer not message message restart timer T308 restarted T310 10 Incoming Incoming call Incoming connect or Call cleared Timer not call proceeding disconnect message restarted proceeding message T322 4 Any state Outgoing status Incoming status Retransmit status Retransmit inquiry message disconnect release inquiry message status inquiry or release complete restart timer T322 message message restart timer T322 1 12 308624 14 10 Rev 01 Message Processing Frame Relay Overview Table 1 4 shows how th
55. supplies this value You configure this value for each PVC but not for the interface To enter the CIR value navigate to the prompt for the PVC you want to modify for example box serial 1 2 frame relay 1 2 newyork pvc 1 2 51 and enter cir lt integer gt integer is the number of bits the router can transmit per time interval The value can be from 0 to 2 147 483 647 bits The default is 0 For example the following command line sets a CIR value of 5 000 bits pvc 1 2 51 cir 5000 pvc 1 2 51 4 24 308624 14 10 Rev 01 Using Site Manager Customizing PVCs Using Site Manager you can configure only the Committed Burst the Excess Burst and the Throughput To configure the normal high and low queue limits you must use the BCC as described in Normal High and Low Queue Limits on page 4 22 To enable traffic shaping complete the following tasks Site Manager Procedure You do this System responds 1 In the Configuration Manager window click on a port configured for frame relay The Edit Connector window opens Click on Edit Circuit The Frame Relay Circuit Definition window opens Click on Services The Frame Relay Service List window opens Select the appropriate service record and click on PVCs The FR PVC List for Service window opens Click on a PVC that you want to configure for traffic shaping Set the following parameters Committed Burst
56. the two paths may arrive at their destination out of sequence Some protocols do not tolerate packets arriving out of sequence and as a result you may experience poor performance or failures For more instruction on configuring multiline mode see Grouping Service Records for Multiline Mode on page 4 27 Traffic Distribution Between Data Paths To distribute traffic between multiline data paths you can use one of two methods e Random distribution e Address based distribution Random Distribution Random distribution means that as the router sends out each packet it alternates between the lines This option determines which line the packet uses based on a randomly assigned number For each outbound packet the router generates a random number that designates the line to use Random distribution balances traffic across lines and lets the router use the two lines efficiently Because packets travel on different paths they arrive at the destination out of sequence and the upper layer protocols for example IP and Open Systems Interconnection OSI have to resequence the information Some protocols cannot tolerate packets arriving out of sequence so be sure this option is appropriate for your application 1 36 308624 14 10 Rev 01 Frame Relay Overview Address Based Distribution Address based distribution determines the data path for outbound traffic from the source and destination address in each packet Any give
57. window opens Choose the service record that includes the SVCs you want to disable and set the SVC Support parameter to Disable 5 Click on Apply 6 Click on Done Disconnecting Active SVCs You return to the Configuration Manager window You will see the Active Calls button in Site Manager only when there is an incoming or outgoing call To disconnect an active SVC complete the following tasks Site Manager Procedure You do this System responds 1 In the Configuration Manager window choose Protocols The Protocols menu opens Choose Frame Relay The Frame Relay menu opens 3 Choose Services Choose the service record that includes the SVCs you want to disconnect The Frame Relay Service List window opens Click on SVCs The FR SVC Options List for Service window opens Click on Active Calls The Frame Relay SVC Active Calls window opens Choose the DLCI of the SVC you want to disconnect Click on Delete The SVC Active Call Delete Query window opens continued 5 10 308624 14 10 Rev 01 Customizing SVCs Site Manager Procedure continued You do this 9 Click on Yes System responds The SVC disconnects You return to the Frame Relay SVC Active Calls window 10 Click on Done 11 Click on Done You return to the Frame Relay SVC Options List for Service window You return to the Fra
58. 2 frame relay 1 2 service 8 0 32 and enter svc screen usage lt value gt value can be include the default allows calls exclude disallows calls For example the following command line disallows calls from numbers in associated SVC option records service 8 0 32 svc screen usage exclude service 8 0 32 5 6 308624 14 10 Rev 01 Customizing SVCs Using Site Manager To configure call blocking and screening complete the following tasks Site Manager Procedure You do this System responds 1 In the Configuration Manager window The Protocols menu opens choose Protocols 2 Choose Frame Relay The Frame Relay menu opens 3 Choose Services The Frame Relay Service List window opens 4 Set the following parameters e SVC Call Block e SVC InScreening Disable e SVC InScreening Usage Click on Help or see the parameter descriptions beginning on page A 38 5 Click on Apply 6 Click on Done You return to the Configuration Manager window Adding SVC Options to Service Records You can use either the BCC or Site Manager to add SVC options to service records Using the BCC To add SVC options navigate to the service record prompt for example box serial 1 2 frame relay 1 2 service 8 0 32 and enter svc options lt svc_name gt svc_name identifies the SVC and can be any alphanumeric string For example the following command line adds the SVC toronto
59. 200 Base Timer parameter A 15 T203 Idle Timer parameter A 15 T303 Setup Message Timer parameter A 19 T305 Disconnect Timer parameter A 19 T308 Release Timer parameter A 20 T310 Call Proceding Timer parameter A 20 T322 Status Enq Retry Timer parameter A 21 technical publications xxi technical support xxii Technician Interface configuring buffers for traffic shaping 1 31 TEl assigned state 1 9 text conventions xviii throttling as a congestion method A 11 description 1 24 Throughput parameter A 29 timer recovery state 1 9 timers for call setup 1 12 for LAPF 1 10 retransmission 1 10 1 11 traffic control big pipe little pipe topology 1 19 1 32 traffic distribution for multiline 1 36 Index 5 traffic shaping buffer queue limits 1 31 CIR description 1 23 committed burst rate 1 24 configuration guidelines 1 29 customizing for PVCs 4 21 customizing for SVCs 5 33 data clipping 1 31 description 1 23 excess burst rate 1 24 for SVCs 1 27 monitoring statistics 1 30 oversubscribing the interface 1 31 quality of service description 1 25 PVCs 1 25 SVCs 1 27 with data compression 1 30 Traffic Shaping Disable parameter A 55 U unnumbered control frames for LAPF 1 9 V virtual circuits description 1 2 Ww WCP Enable parameter A 56 X X 213 Data LQA Priority parameter A 47 X 213 Data Priority parameter A 47 X 213 Gain LQA Priority parameter A 48 X
60. 22 Figure A 6 Frame Relay PVC Add Window cccccccccceeesceeeeeeeeeeeeeseeeeeeeeaeeeeeeees A 24 Figure A 7 FR PVC List for Service Window 0000 ccccececceseeeeeeeeeeeseeeeeeeesaeeeeeaeeens A 26 Figure A 8 Services Multilined With Window ee P eee ee A 32 Figure A 9 Add Multiline Services Window c ceecceseeseeeeeeeteeeeseeeteeneseneeeanensnee A 33 Figure A 10 Frame Relay Service List Window for SVCS c eceeeeteeesteeseeeees A 35 Figure A 11 Frame Relay SVC Options Add Window cccsscccecessseteeeeessteeeeeess A 41 Figure A 12 FR SVC Options List for Service WindOW ccccscccccesssseeeeeessteeeeeess A 44 308624 14 10 Rev 01 xiii Table 1 1 Table 1 2 Table 1 3 Table 1 4 Table 1 5 Table 1 6 Table 1 7 Table 1 8 Table 1 9 Table 3 1 Table 4 1 Table B 1 Tables PVC and SVC Protocol and Feature Support ccseceseseeeeeteeeeeeeeees 1 4 LAPF Timeout and Retransmission Timers cccceeeeteesteeeteeees 1 10 Nepak THONG scccccnnieiase tedieddiegoineee sonateneecdeatatepuonestanrpdacecieedesauaantegisceomde 1 12 Message PIOCOSEING sporiniai aa eee amie 1 13 How Protocols Handle Address Resolution abbii T i 1 19 incoming and OULUN scisrisisiniin naaa 1 29 Inactivity Timer and Inactivity Timer Mode Interaction 0 0 ee 1 34 Synchronous Line Parameters for Frame Relay sassone 1 39 MTU Adjustments for Frame Relay
61. 4 Choose FR PVC Passthru If you want to also configure compression at this time choose WCP Configuring any other bridging protocols will have no effect The Select Protocols window opens 5 Click on OK You return to the FR PVC List for Service window 6 Click on Done until you return to the Configuration Manager window 308624 14 10 Rev 01 4 13 Configuring Frame Relay Services Mapping Pass Through PVCs Create the mapping between the PVCs by completing the following tasks Site Manager Procedure You do this System responds 1 In the Configuration Manager window choose Protocols The Protocols menu opens Choose FR PVC Passthru The FR PVC Passthru menu opens 3 Choose Mappings The FR PVC Passthru Mapping List window opens Choose Add The FR PVC Passthru Mapping Add window opens It directs you to Select first PVC for Passthru mapping Choose the first PVC then click on Select The FR PVC Passthru Mapping Add window now shows a list of PVCs that you can map to the first PVC This list consists of all PVCs that you have not already configured for a mapping and that reside on lines other than the one for the first PVC Site Manager prompts you to Select second PVC for Passthru mapping Choose the PVC that you want to map to the previously chosen PVC then click on Select The FR PVC Passthru Mapping List window di
62. 5 SVC Support DISABLE SYC Local Party Number SVC Local Party Sub Address S C Local Party Number Plan SVC Local Party Type of Number Figure A 5 Frame Relay Service List Window for PVCs A 22 308624 14 10 Rev 01 Site Manager Parameters To access the Frame Relay Service List window Site Manager Procedure You do this System responds 1 In the Configuration Manager choose The Protocols menu opens Protocols 2 Choose Frame Relay The Frame Relay menu opens 3 Click on Services The Frame Relay Service List window opens Parameter Service Name Path Configuration Manager gt Protocols gt Frame Relay gt Services Default None Options lt ine_number gt 0 lt circuit_number gt Function Identifies the service record Instructions Site Manager assigns a unique name in the given format There is no need to change this value MIB Object ID 1 3 6 1 4 1 18 3 5 9 9 5 1 7 308624 14 10 Rev 01 A 23 Configuring Frame Relay Services PVC Parameters This section contains information about the following topics Topic Page DLCI Parameter for Each PVC A 24 PVC Service Record Parameters A 26 Multiline Algorithm Parameter A 32 DLCI Parameter for Each PVC The Frame Relay PVC Add window Figure A 6 contains the DLCI Number parameter eT Cancel OK Help Figure A 6 Frame Relay PVC Add Window To access the Frame Relay PVC Add window
63. 5 intervals and the default is 6 308624 14 10 Rev 01 3 9 Configuring Frame Relay Services For example the following command line sets the full enquiry interval to 45 seconds dlcmi 1 2 full enquiry interval 45 dicmi 1 2 Error Threshold To set an error threshold navigate to the dlcmi prompt for example box serial 1 2 frame relay 1 2 dicmi and enter error threshold lt integer gt integer is the number of status exchange errors that can occur during the number of monitored events you specify before the router brings down the connection The value can be 1 to 5000 and the default is 3 For example the following command line sets the error threshold at 12 errors dlcmi 1 2 error threshold 12 dlcemi 1 2 Monitored Events To set monitored events navigate to the dlcmi prompt for example box serial 1 2 frame relay 1 2 dicmi and enter monitored events lt integer gt integer is the number of monitored events that together with the error threshold establishes a criterion to evaluate the quality of the router frame relay connection The value can be 1 to 5000 events and the default is 4 For example the following command line sets the value at 10 events dlcmi 1 2 monitored events 10 dlcmi 1 2 3 10 308624 14 10 Rev 01 Using Site Manager Customizing Frame Relay Interfaces To configure the polling interval error threshold full enquiry interval and monitored events complete the follow
64. 7 Service Name Parameter soi ciccccanucsercsansnsekccaaurdericaddundecadsnnacencaniiiicadsuunnecdagranessanaaeninn A 22 PAG atoll cfc gc monn A 24 DLGI Paramoter ior Each PYG aces sors rseed sider cesisievntees ddnseerd greg ladeelas Maven sarees A 24 PVC Service Record Parameters inpia ipua EOIR PE E ee A 26 Mine Algorithm Parametar sicicscioncccscccnneddnndanercctadanrtckecanmntcnnmeivcsmnemncnenenens A 32 C Service Record Paramelers s cccnccescassnsisccacanasexseesuena ainaani naaa NaDa aaa AAEN A 35 SVC Service List Parameters joosta ana danm T ee T ene A 35 us Oploe Para OlENS c50 ssid acrid aarti a elae nd ee RE SVC Options List for Service Parameters cc cccecceeeeeeeeeeeeeeeeeeeeteeeeeeeeeeeeeeeaees A 44 Appendix B RIP Management for Frame Relay SVCs Appendix C Monitoring Frame Relay Using the BCC show Command Grline Heh for show Commande aes asia assed tena snes wie nan Sad aalvass aa C 2 SHOW kame relay CONGESTION sorena aa C 2 show Tr AIM Tee nay MUME sates cae cueans Readius iad pau Datd peace aa peaee eecud saa patuainn peda pena C 4 show frame relay services PA etude P TETT ones errs a C 5 show kame relay SHADING acecsscrrcrccanivnece saactvenceantandanqaanareasaadaaneraraamarvecesangrdiacsmntaiaaaanies C 6 show MRI F RN SACU sariei ia aa a aaee seuansatt setuades aaa aE C 7 show frame relay stats dicmi etre cere rere PAT T orean a C 7 Show kametelay SiS ONO ai
65. 8 3 5 9 9 1 1 8 Address Length Configuration Manager gt Protocols gt Frame Relay gt Interfaces Two Byte Two Byte Three Byte Four Byte Specifies the length of the frame relay address field The length of this field determines the range of valid numbers for the DLCI number For more details see the DLCI Number parameter description on page A 25 Select the address length for the address field This must match what the network specifies 1 3 6 1 4 1 18 3 5 9 9 1 1 9 A 6 308624 14 10 Rev 01 Parameter Path Default Options Function Instructions MIB Object ID Parameter Path Default Options Function Instructions MIB Object ID Site Manager Parameters Polling Interval Configuration Manager gt Protocols gt Frame Relay gt Interfaces 10 5 to 30 seconds Specifies the interval between status inquiry messages that the router transmits Status inquiry messages cause a network response in the form of a link integrity verification message or full status message Successful completion of the request response handshake verifies the status of the router frame relay network link Accept the default value 10 seconds If this value does not match what the network requests enter a value that is appropriate for your network in the range of 5 to 30 seconds Polling Interval does not function if you set Mgmnt Type to DLCMI None 1 3 6 1 4 1 18 3 5 9 9 1 1 10 Full Enquiry Int
66. Appendix A Site Manager Parameters This appendix contains the following information Topic Page Interface Parameters A 2 SVC LAPF Parameters A 12 SVC Signaling Parameters A 17 Service Name Parameter A 22 PVC Parameters A 24 C Service Record Parameters A 35 For each parameter this appendix provides the following information e Parameter name e Configuration Manager menu path e Default setting e Valid parameter options e Parameter function e Instructions for setting the parameter e Management information base MIB object ID 308624 14 10 Rev 01 A 1 Configuring Frame Relay Services The Technician Interface allows you to modify attributes by issuing set and commit commands with the MIB Object ID This process is equivalent to modifying parameters using Site Manager For more information about using the Technician Interface to access the MIB see Using Technician Interface Software Caution The Technician Interface does not verify attribute values you enter Entering an invalid value can corrupt your configuration Interface Parameters The Frame Relay Interface List window contains the parameters for the frame relay interfaces If you have configured PVCs only you see a window similar to the one in Fig a FR Slot 4 COM2 Done FR Slot 4 COM3 Apply FR Slot 3 Ti 1 Values Help ood _ At Enable ENABLE Mgmnt Type ANSI T1 617D Address ADDR 0922 Addr
67. BCC or Site Manager to control congestion for individual PVCs Using the BCC The following sections describe how to configure congestion control for a PVC 308624 14 10 Rev 01 Customizing PVCs Congestion Control To enable or disable congestion control navigate to the prompt for the PVC you want to modify for example box serial 1 2 frame relay 1 2 dallas pve 1 2 51 and enter congestion control lt value gt value can be enabled activates congestion control The router drops all traffic destined for a congested PVC until the congestion clears disabled deactivates congestion control inherit the default ensures that this setting for the PVC matches the setting for the frame relay interface congestion control For example the following command line enables congestion control for this PVC pvc 1 2 51 congestion control enabled pvc 1 2 51 Congestion Timer To change the value for the congestion timer navigate to the prompt for the PVC you want to modify for example box serial 1 2 frame relay 1 2 dallas pve 1 2 51 and enter congestion timer lt nteger gt integer is the length of time in seconds during which the router counts congestion notifications see Congestion Counter on page 4 20 If the router receives the number of congestion notifications you set in the congestion counter during this amount of time the router stops transmitting data The value can be 0 5 1
68. BayRS Version 14 10 Part No 308624 14 10 Rev 01 January 2000 4401 Great America Parkway Santa Clara CA 95054 Configuring Frame Relay Services NORTEL NETWORKS Copyright 1999 Nortel Networks All rights reserved Printed in the USA January 2000 The information in this document is subject to change without notice The statements configurations technical data and recommendations in this document are believed to be accurate and reliable but are presented without express or implied warranty Users must take full responsibility for their applications of any products specified in this document The information in this document is proprietary to Nortel Networks NA Inc The software described in this document is furnished under a license agreement and may only be used in accordance with the terms of that license A summary of the Software License is included in this document Trademarks NORTEL NETWORKS is a trademark of Nortel Networks Bay Networks is a registered trademark and ASN BayRS BayStack and BCC are trademarks of Nortel Networks Microsoft MS MS DOS Win32 Windows and Windows NT are registered trademarks of Microsoft Corporation All other trademarks and registered trademarks are the property of their respective owners Restricted Rights Legend Use duplication or disclosure by the United States Government is subject to restrictions as set forth in subparagraph c 1 ii of the Rights in Technical Data and Co
69. Connections n 1 40 interface Coniguration TASKS sc isccccnnuscseritnieiraaicieantadaneuiccnoauiaaaadons 3 1 PYG CGoniguiaion Tasks ssc iccvssteets crake tcaattnds aa a eiaa 4 2 RIF FSIE aiino hectare oetandenn abeceueda iotsaeaniehie inh aaeGn aeanieies B 2 308624 14 10 Rev 01 XV Preface This guide describes frame relay and what you do to start and customize frame relay services on a Nortel Networks router You can use the Bay Command Console BCC or Site Manager to configure frame relay on a router In this guide you will find instructions for using both the BCC and Site Manager Before You Begin Before using this guide with a new router you must complete the following procedures For a new router e Install the router see the installation guide that came with your router e Connect the router to the network and create a pilot configuration file see Quick Starting Routers Configuring BayStack Remote Access or Connecting ASN Routers to a Network e Make sure that you are running the latest version of Nortel Networks BayRS and Site Manager software For information about upgrading BayRS and Site Manager see the upgrading guide for your version of BayRS 308624 14 10 Rev 01 xvii Configuring Frame Relay Services Text Conventions This guide uses the following text conventions angle brackets lt gt bold text brackets ellipsis points italic text Indicate that yo
70. ERT E aks FRAD DTE DCE ZE FR0016A Figure 1 13 PVC Pass Through Figure 1 13 shows a router with an Ethernet interface and two frame relay interfaces The interface to the frame relay network on the right is a DTE The interface to the FRAD on the left is a DCE The router delivers all IP frames inbound on DLCI 50 to the IP interface It also delivers all IP frames inbound on DLCI 30 to the IP interface The router delivers all other traffic inbound on DLCI 30 via the PVC pass through system to DLCI 20 which transmits the data to the FRAD All data inbound on DLCI 20 is delivered via the PVC pass through system to DLCI 30 which transmits the data to the frame relay network PVC pass through works with both leased line and dial on demand interfaces It works with Nortel Networks data compression congestion control and traffic shaping It does not work with data encryption which requires a direct mode PVC Frame Relay Dial Services Frame relay works with Nortel Networks dial on demand and dial backup services For more information about dial services see Configuring Dial Services Synchronous Line Configuration for Frame Relay If you enable frame relay on a circuit Site Manager automatically sets the following synchronous line parameters Table 1 8 1 38 308624 14 10 Rev 01 Frame Relay Overview Table 1 8 Synchronous Line Parameters for Frame Relay Parameter Value BofL Disable Promiscuou
71. G Inactivity VAES siasiisnsnarenni iari aana Eea aA 5 24 Controlling Congestion for SVCS ssseeseseesseeseeene ohai rer T aboen ek 5 26 Configuring Congestion Control for an jniartana EEE E E PE E E 5 27 Gondes ton ComON sisiane aaa oats 5 27 Congest TINGE cision iaae Enea EEA 5 27 Congestion Goume E wiirrras kini aT 5 28 Congestion Method Ore rere rere T ET mite Sato 5 28 Configuring Congestion Control for indivicwal OVCO cucarrones 5 30 Congestion CONE iste aeateicen tienes a a Guid 5 30 Congestion Timer rrr rere rrr err et rer re E T 5 30 Gorgas OQ OUMIED aips nanniet ania iaeniiepenned aN 5 31 EI NE Sasa ter una eiaa AaS EAS aaRS 5 31 Using Tafi Shaping wih SVGS ccsssctecac ete ieretie i a R EOE 5 33 308624 14 10 Rev 01 ix Enabling taie SHAPING anonsai a n OA Customizing Traffic Shaping Quality al Senie EET a T ero RT CI EUS anecde nate bate eed sabre ted aa 5 35 Ere e BI 2 Genet ree nnn eenee hee amntet teen ee romance erste meena et ommenre ree cere 5 36 CIR Throughput cicinnsvsccainnaveccan A EE E E AAT r AE AT naire DOT Disabling and Reenabling Data Compression ir SVCs T EPI N AIIE AAN T EA 5 39 Seto A213 Priores 10 OVOS cncsateaaninsars sa cmissiybaatnte enim rains Seiaadakhen iunsahens umn BESSE 5 41 Appendix A Site Manager Parameters iierace Parameters ee ene ope ee ee ere a i rere rr set A 2 SVC LAPF Parameters 000 na PE nna skeennines errr A 12 eG agamo Paras an a A Sealers A 1
72. P Configure ARP or Inverse ARP Configure Inverse ARP DECnet IV Automatic None VINES ARP None for ARP or Inverse ARP Inverse ARP is the default for frame relay Internet Packet Automatic None Exchange IPX Xerox Networking Automatic None System XNS AppleTalk AppleTalk ARP None Address Resolution for SVCs For SVCs adjacent host configuration including either an E 164 or X 121 address eliminates the need for the router to do address resolution Traffic Control Frame relay is unreliable It does not include error recovery mechanisms relying instead on the upper layer protocols to detect and retransmit lost frames Hub and spoke topologies often present a big pipe little pipe situation The central or hub site has a faster link to the frame relay service because it is a point of concentration for many remote sites The central or hub site has a big pipe with for example a T1 E1 connection that can transmit data at rates of 1 54 Mb s The remote sites usually support a much lower line speed 56 Kb s to 64 Kb s or little pipe Figure 1 8 illustrates this concept 308624 14 10 Rev 01 Configuring Frame Relay Services 1 536 2 048Mb s py his B A ae 64Kbis 2 64Kbis__D FROOI3A Figure 1 8 Big Pipe Little Pipe Topology The centr
73. Party Number Remote Party Sub Address Remote Party Number Plan Remote Party Type of Number Click on Help or see the parameter descriptions beginning on page A 42 Set the WCP Enable parameter to Disable Click on Help or see the parameter description on page A 56 8 Click on Apply 9 Click on Done You return to the Frame Relay Service List window 10 Click on Done You return to the Configuration Manager window 5 40 308624 14 10 Rev 01 Customizing SVCs Setting X 213 Priorities for SVCs Some frame relay networks can prioritize SVC data and connection characteristics by setting X 213 priority parameters Though you configure these parameters for the router it is the network that uses them You can use either the BCC or Site Manager to set X 213 priorities for SVCs Using the BCC The X 213 priority parameters adhere to ITU T Q 933 and X 213 The parameters are data priority data priority minimum gain priority gain priority minimum keep priority and keep priority minimum If your network does not support X 213 prioritization accept the default values for these parameters unless the network is able to accept pieces of signaling information that it does not recognize The data priority parameter sets the priority of data on the network connection It is a value the router requests it is not guaranteed The data priority minimum parameter sets the lowest acceptable prio
74. Relay gt Interfaces gt Signaling 4 2 to 90 seconds Indicates the number of seconds allowed for call clearing initiated by the other end of the connection or when the T305 Disconnect Timer expires If timer T305 expires the router enters the release request state starts timer T308 and sends a release message e Timer T308 stops when the router receives a release complete message from the other end of the connection In the event of a timeout the router retransmits the release message and restarts the timer If the timer expires a second time the call is cleared The timer is not restarted Enter the timer value for call clearing by the other end of the connection or when timer T305 expires 1 3 6 1 4 1 18 3 5 9 9 9 1 8 T310 Call Proceding Timer Configuration Manager gt Protocols gt Frame Relay gt Interfaces gt Signaling 10 2 to 90 seconds Indicates the number of seconds allowed from the time the router receives a call proceeding message to the time the router receives a connect or disconnect message In the event of a timeout the router clears the call The timer is not restarted Enter the timer value for call proceeding 1 3 6 1 4 1 18 3 5 9 9 9 1 9 A 20 308624 14 10 Rev 01 Parameter Path Default Options Function Instructions MIB Object ID Parameter Path Default Options Function Instructions MIB Object ID Site Manager Parameters T322 Status Enq Retry Timer
75. Relay menu opens 3 Choose Services Choose the service record that includes the SVC that you want to configure for traffic shaping The Frame Relay Service List window opens Click on SVCs The FR SVC Options List for Service window opens Choose the SVC record whose values for the following parameters match the remote end of the SVC connection Remote Party Number Remote Party Sub Address Remote Party Number Plan Remote Party Type of Number Set the Traffic Shaping Disable parameter to Enable Click on Help or see the parameter description on page A 55 Click on Apply continued 5 34 308624 14 10 Rev 01 Customizing SVCs Site Manager Procedure continued You do this System responds 9 Click on Done You return to the FR SVC Options List for Service window 10 Click on Done You return to the Frame Relay Service List window 11 Click on Done You return to the Configuration Manager window Customizing Traffic Shaping Quality of Service You can use the BCC and Site Manager to customize quality of service requirements This means that you can modify traffic shaping parameters for the incoming and outgoing committed burst rate excess burst rate and minimum acceptable throughput For more information about quality of service see Requesting Quality of Service on page 1 27 Using the BCC To customize traffic shaping quality
76. Retransmission Limit Indicates that the router sends the SABME message based Exceeded N200 Violation on the value contained in the N200 counter wfLapfN200 without receiving a reply Frame Size Exceeded Number of information frames whose length exceeds the N201 Violations maximum number of octets defined by N201 wfLapfN201 308624 14 10 Rev 01 C 9 Configuring Frame Relay Services show frame relay stats lapf receive Displays LAPF receive statistics for frame relay interfaces The output contains the following information Interface Interface on which the frame relay VC resides Window Number of outstanding signaling messages allowed SABME Set Asynchronous Balanced Mode Extended SABME command that initiates multiple frame operation UA Unnumbered acknowledgment UA is a response sent by a station upon receipt of a SABME or DISC command DISC Disconnect DISC is a command that initiates the release of multiple frame operation DM Disconnect mode DM indicates the collision of commands and responses that prevent the initiation of multiple frame operations FRMR Frame Reject FRMR indicates errors encountered that cannot be recovered by resending an information frame REJ Reject REJ requests retransmission of information frames RNR Receive not ready RNR indicates that the station is temporarily busy and not ready to receive information frames RR Receive ready RR indicates that the station is ready to r
77. VC To enable multicast for the interface navigate to the frame relay prompt for example box serial 1 2 frame relay 1 2 and enter multicast control enabled The default is disabled For example the following command line enables multicast for this frame relay interface frame relay 1 2 multicast control enabled frame relay 1 2 To enable multicast for the PVC navigate to the prompt for the PVC that you want to configure as multicast for example box serial 1 2 frame relay 1 2 service 4 0 32 pvc 1 2 51 and enter multicast control enabled The default is disabled For example the following command line enables multicast for this PVC pvc 1 2 51 multicast control enabled pvc 1 2 51 4 10 308624 14 10 Rev 01 Using Site Manager Customizing PVCs To enable multicast service you must set the Multicast parameter for both the interface and the PVC To enable multicast for the interface complete the following tasks Site Manager Procedure You do this System responds 1 In the Configuration Manager window click on a port configured for frame relay The Edit Connector window opens Click on Edit Circuit Click on Interfaces The Frame Relay Circuit Definition window opens The Frame Relay Interface List window opens Set the Multicast parameter to Enable Click on Help or see the parameter description on page A 9 5 Click on Apply 6 Click on Done
78. able RIP is If no packets are transmitted or Disabled applicable RIP disabled no packets are received within is disabled the inactivity timer interval the SVC disconnects Enabled Enabled Transmit Inactivity gt RIP When the RIP timer expires RIP packets will refresh the e RIP packets will be sent transmit inactivity timer any over connected SVCs connected SVCs will not e Any SVCs configured as __ disconnect due to inactivity adjacent hosts that are not connected will connect to send RIP packets continued S8dIMas Aejay awes4 Buunbyuo0D LO A8Y OL Vl 7e980E s g Table B 1 RIP Parameters continued IP or IPX RIP Frame Relay Frame Relay IP or IPX SVC Broadcast SVC Inactivity Inactivity Timer Inactivity Timer RIP Enable Enable Timer Mode RIP Timer RIP Timer Functionality Functionality Enabled Disabled Transmit Inactivity gt RIP When the RIP timer expires RIP packets will refresh the e RIP packets will be sent transmit inactivity timer any over connected SVCs connected SVCs will not e Any SVCs configured as disconnect due to inactivity adjacent hosts that are not connected will remain disconnected SVCs will not connect and will not send RIP packets Enabled Enabled Transmit Inactivity lt RIP When the RIP timer expires If no non RIP packets are e RIP packets will be sent transmitted within the inactivity over connected SVCs timer interval the SVC
79. able frame relay service if you previously disabled it set to Enable MIB Object ID 1 3 6 1 4 1 18 3 5 9 9 1 1 2 A 4 308624 14 10 Rev 01 Site Manager Parameters Parameter Mgmnt Type Path Configuration Manager gt Protocols gt Frame Relay gt Interfaces Default ANSI T1 617D Options DLCMI None Rev 1 LMI ANSI T1 617D CCITT Annex A LMI Switch Annex D Switch Annex A Switch Function Specifies the management protocol that the router and the frame relay network use to communicate status information Routers connected back to back also use a Management protocol to exchange status information Option for No Management DLCMI None provides no management interface between the router and the frame relay network In the absence of management support you must configure all VCs manually Options for User Management Rev 1 LMI provides user side management services as specified by Revision 1 of the Local Management Interface standard ANSI T1 617D provides user side management services as specified in Annex D to ANSI standard T1 617 1991 CCITT Annex A provides user side management services as specified by the ITU T formerly CCITT Options for Limited Management for DCE Switch primarily for troubleshooting LMI Switch offers limited management services for the DCE side of the connection as specified by Revision 1 of the Local Management Interface standard Annex D Switch provides limited managem
80. al site router sends traffic at its available bandwidth in this example at T1 rates 1 536 Mb s in the United States and Canada 2 048Mb s elsewhere Some switches recognize that the remote site is configured at a lower speed and begin to drop frames above the capacity of the remote site router At the remote site the frame relay interface discards frames beyond its available buffer The assumption is that the user application detects the lost frames and either retransmits them or uses a flow control mechanism in the protocol such as windowing to throttle which means queue the traffic But not all applications have a robust mechanism to deal with lost or out of sequence frames You can use Nortel Networks WAN Compression Protocol WCP protocol prioritization congestion control and traffic shaping either singly or in combination to help control the flow of traffic and avoid loss of data Data Compression You can configure both hardware and software based data compression over WANs running frame relay Enabling compression improves bandwidth efficiency by eliminating redundant strings in data streams This in turn improves network response times and reduces line costs Enabling compression on a frame relay link also provides reliability Both sides of a link using compression maintain a history of data that has already traveled across the network and WCP detects and retransmits dropped packets 1 20 308624 14 10 Rev 01 Fra
81. and initiates multiple frame setup 308624 14 10 Rev 01 Frame Relay Overview The supervisory frames RNR and RR support flow control on the channel If the receiver is not ready to receive data it sends an RNR message to tell the sender to wait When it is ready to receive data it sends an RR message Flow control in one direction is independent of the other direction Timer T203 Timer T203 is used to detect a lost connection When either end of the link is not waiting for any data it starts timer T203 If it sends or receives no frames before this timer expires the peer transitions to the timer recovery state sends either an RR or RNR message to the remote peer and starts timer T200 If timer T200 expires the connection is assumed lost and the peer transitions to the TEl assigned state To terminate multiple frame support on the circuit one peer sends a DISC message to the other The receiving peer responds with a UA message and disconnects the circuit SVC Signaling Call Setup The following sections describe the signaling between a DTE and the frame relay network in which various types of messages are exchanged Table 1 3 contains a list of timers used in the signaling exchanges that occur Chapter 5 Customizing SVCs describes how you can use the BCC or Site Manager to configure these timers to your specific requirements A frame relay SVC is established using the frame relay signaling protocol between the
82. aping the throughput parameters and the burst parameters must be set to values greater than zero Choose a value appropriate to your network 1 3 6 1 4 1 18 3 5 9 9 10 1 20 LL Core In Throughput Configuration Manager gt Protocols gt Frame Relay gt Services gt SVCs 0 0 to 21447463647 b s Specifies the requested incoming throughput kbits second when no congestion is occurring To enable traffic shaping the throughput parameters and the burst parameters must be set to values greater than zero Choose a value appropriate to your network 1 3 6 1 4 1 18 3 5 9 9 10 1 21 LL Core Min Out Throughput Configuration Manager gt Protocols gt Frame Relay gt Services gt SVCs 0 0 to 21447463647 b s Specifies the minimum acceptable outgoing throughput To enable traffic shaping the throughput parameters and the burst parameters must be set to values greater than zero Choose a value appropriate to your network 1 3 6 1 4 1 18 3 5 9 9 10 1 22 A 50 308624 14 10 Rev 01 Parameter Path Default Options Function Instructions MIB Object ID Parameter Path Default Options Function Instructions MIB Object ID Site Manager Parameters LL Core Min In Throughput Configuration Manager gt Protocols gt Frame Relay gt Services gt SVCs 0 0 to 21447463647 b s Specifies the minimum acceptable incoming throughput To enable traffic shaping the throughput parameters and the burst parameters
83. as cleared If you set the Congestion Control parameter to Inherit the PVC uses DLCMI for congestion control not the value of this parameter 1 3 6 1 4 1 18 3 5 9 9 2 1 27 Congestion Counter Configuration Manager gt Protocols gt Frame Relay gt Services gt PVCs 20 1 to 500 notifications Sets the maximum number of congestion notifications that the router can receive during the Congestion Timer period before it stops transmitting Specify the congestion count The smaller the number the more quickly the router detects congestion and stops transmitting Note however that if you set the Congestion Control parameter to Inherit the PVC uses DLCMI for congestion control not the value of this parameter 1 3 6 1 4 1 18 3 5 9 9 2 1 28 A 30 308624 14 10 Rev 01 Parameter Path Default Options Function Instructions MIB Object ID Parameter Path Default Options Function Instructions MIB Object ID Site Manager Parameters Congestion Method Configuration Manager gt Protocols gt Frame Relay gt Services gt PVCs Inherit Shutdown Throttle Throttle Then Shutdown Inherit Specifies the method of congestion control Inherit specifies that this VC will use the value of the interface Congestion Method parameter Shutdown terminates the VC when congestion occurs Throttle queues traffic when congestion occurs traffic resumes when congestion clears This option is valid only whe
84. ase maximum transmission unit Open Systems Interconnection Primary Rate Interface permanent virtual circuit quality of service set asynchronous balanced mode extended Systems Network Architecture switched virtual circuit time interval terminal endpoint identifier Telecommunications Network Trivial File Transfer Protocol XX 308624 14 10 Rev 01 Preface UA unnumbered acknowledgment URL uniform resource locator VC virtual circuit WAN wide area network WCP WAN Compression Protocol WEP WAN Encryption Protocol XNS Xerox Networking System Hard Copy Technical Manuals You can print selected technical manuals and release notes free directly from the Internet Go to support baynetworks com library tpubs Find the product for which you need documentation Then locate the specific category and model or version for your hardware or software product Using Adobe Acrobat Reader you can open the manuals and release notes search for the sections you need and print them on most standard printers You can download Acrobat Reader free from the Adobe Systems Web site www adobe com You can purchase selected documentation sets CDs and technical publications through the collateral catalog The catalog is located on the World Wide Web at support baynetworks com catalog html and is divided into sections arranged alphabetically e The CD ROMs section lists available CDs e The Guides Books section lists books on techn
85. ate to the prompt for the SVC you want to modify for example box serial 3 2 frame relay 3 2 service 8 0 32 svc options toronto and enter congestion timer lt nteger gt integer is the length of time in seconds during which the router counts congestion notifications see Congestion Counter on page 5 31 If the router receives the number of congestion notifications you set in the congestion counter during this amount of time the router stops transmitting data The value can be 0 5 1 1 5 2 2 5 3 3 5 4 4 5 or 5 seconds The default is 1 For example the following command line sets a congestion timer of 2 5 seconds svc options toronto congestion timer 2 5 svc options toronto 5 30 308624 14 10 Rev 01 Customizing SVCs Congestion Counter To change the value for the congestion counter navigate to the prompt for the SVC you want to modify for example box serial 3 2 frame relay 3 2 service 8 0 32 svc options toronto and enter congestion counter lt integer gt integer is the maximum number of congestion notifications the router can receive during the congestion timer period before it stops transmitting data The value can be from 1 to 500 notifications The default is 20 For example the following command line sets a congestion counter of 30 notifications svc options toronto congestion counter 30 svc options toronto Congestion Method To change the value for the congestion me
86. ation of the inactivity timer If the router does not transmit any data the inactivity timer expires and disconnects the SVC inbound only data received by the router prevents the expiration of the inactivity timer If the router does not receive any data the inactivity timer expires and disconnects the SVC either only data transmitted OR received by the router prevents the expiration of the inactivity timer If the router does not transmit or receive data the inactivity timer expires and disconnects the SVC The default is both For example the following command line sets the inactivity direction to outbound svc options toronto inactivity direction outbound 5 24 308624 14 10 Rev 01 Customizing SVCs Using Site Manager To set inactivity values for a service record complete the following tasks Site Manager Procedure You do this System responds 1 In the Configuration Manager window The Protocols menu opens choose Protocols 2 Choose Frame Relay The Frame Relay menu opens 3 Choose Services The Frame Relay Service List window opens 4 Choose a service record with SVCs 5 Set the following parameters SVC Inactivity Timer e SVC Inactivity Mode Click on Help or see the parameter descriptions beginning on page A 39 6 Click on Apply 7 Click on Done You return to the Configuration Manager window To set the inactivity timer value and mode for a par
87. ations the router can receive during the congestion timer period before it stops transmitting data The value can be from 1 to 500 notifications The default is 20 For example the following command line sets a congestion counter of 30 notifications frame relay 1 2 congestion counter 30 frame relay 1 2 Congestion Method To change the value for the congestion method navigate to the frame relay prompt for example box serial 1 2 frame relay 1 2 and enter congestion method lt value gt value can be throttle then shutdown first queues traffic when congestion occurs and then terminates the VC if throttling does not alleviate congestion This option is valid only when traffic shaping is enabled shutdown the default terminates the VC when congestion occurs throttle queues traffic when congestion occurs traffic resumes when congestion clears This option is valid only when traffic shaping is enabled For example the following command line sets a congestion method of throttle frame relay 1 2 congestion method throttle frame relay 1 2 5 28 308624 14 10 Rev 01 Using Site Manager Customizing SVCs To configure congestion control for the interface you must first enable congestion control Then you can optionally configure the congestion timer congestion counter and congestion method To configure congestion control for the interface complete the following tasks Site Manager Procedure
88. avigate to the top level box prompt and enter lt interface_type gt slot lt slot_number gt module lt module_number gt connector lt connector_number gt interface_type is the name of a link or net module on the router slot_number is the number of the slot on which the link module is located module_number is the number of the module on which the slot is located connector_number is the number of a connector on the link module After you configure a physical interface the BCC returns a prompt that specifies your current working location For example the following command configures a serial interface on slot 1 connector 2 box serial slot 1 connector 2 serial 1 2 2 2 308624 14 10 Rev 01 Starting Frame Relay 2 Configure frame relay on the physical interface To configure a frame relay interface on a physical interface navigate to the prompt for the physical interface for example box serial 1 2 and enter frame relay For example serial1 2 frame relay frame relay 1 2 You have enabled frame relay You can now configure PVCs and SVCs as described in Configuring PVCs and SVCs on page 2 4 You can also specify the protocols that you want to run on this interface Using Site Manager To enable frame relay complete the following tasks Site Manager Procedure You do this System responds 1 In the Configuration Manager window choose a link or net module with WAN interfaces and click o
89. ay 1 2 and enter congestion control enabled The value can be enabled or disabled Enabling this parameter tells the router to drop all outbound traffic destined for a congested SVC until the congestion clears The value of this parameter affects all SVCs that you do not individually configure For example the following command line enables congestion control for this frame relay interface frame relay 1 2 congestion control enabled frame relay 1 2 Congestion Timer To change the value for the congestion timer navigate to the frame relay prompt for example box serial 1 2 frame relay 1 2 and enter congestion timer lt integer gt integer is the length of time in seconds during which the router counts congestion notifications If the router receives the number of congestion notifications you set in the congestion counter during this amount of time the router stops transmitting data The value can be 0 5 1 1 5 2 2 5 3 3 5 4 4 5 or 5 seconds The default is 1 308624 14 10 Rev 01 5 27 Configuring Frame Relay Services For example the following command line sets a congestion timer of 2 5 seconds frame relay 1 2 congestion timer 2 5 frame relay 1 2 Congestion Counter To change the value for the congestion counter navigate to the frame relay prompt for example box serial 1 2 frame relay 1 2 and enter congestion counter lt integer gt integer is the maximum number of congestion notific
90. ay Services show frame relay shaping Displays information about the traffic shaping configuration of all frame relay VCs This command allows for the following command filters and filter arguments dici lt dlci gt interface lt name gt service lt name gt Displays only frame relay VCs with the specified DLCI Displays only frame relay VCs configured on the specified interface Displays only frame relay VCs on the specified service The output includes the following information Interface DLCI CIR Committed Burst Excess Burst Config Mode Congestion State Interface on which the frame relay circuit resides Name of the VC associated with this circuit Committed information rate The maximum number of bits that the router can transmit over a specified time interval B The maximum number of extra bits the router attempts to send when there is no congestion Be Indicates whether the circuit is configured to use traffic shaping Status of traffic options are e forwarding sending traffic at up to the maximum rate allowed on the PVC congested the PVC is not transmitting e throttling the PVC is throttling back to the CIR rate C 6 308624 14 10 Rev 01 show frame relay stats Monitoring Frame Relay Using the BCC show Command The show frame relay stats command displays statistical information about frame relay services The show frame relay stats command supports the
91. ay VCs Displays normal queue outbound traffic shaping statistics for frame relay VCs Displays a summary of traffic shaping statistics for frame relay VCs 308624 14 10 Rev 01 Monitoring Frame Relay Using the BCC show Command The output for all the shaping subcommand options contains the following information Interface DLCI Frames Inbound Drops Frames Clipped from Queue Maximum Frames in Queue Queue Limit Filter Dropped Frames Large Frames show frame relay stats signalling Interface on which the frame relay VC resides Name of the VC associated with this circuit Total number of frames that the router sends out this interface Total number of inbound frames dropped because the VC is inactive Number of high normal and low priority clipped frames Maximum number of frames stored in the queue Total number of buffers that the interface has to process frames Total number of frames dropped because of congestion Number of large frames Displays receive and transmit statistics for frame relay interfaces The show frame relay stats signalling command supports the following subcommand options receive transmit In addition you can specify the following command filter and filter argument with the subcommand options interface lt name gt Displays only frame relay SVCs configured on the specified interface 308624 14 10 Rev 01 C 13 Configu
92. burst in and for excess burst out combined with committed burst out define respectively the maximum number of bits that a VC can receive and transmit during the VC s burst period when no congestion is occurring The excess burst plus the committed burst must be less than or equal to the line speed To change the value for excess burst in or excess burst out navigate to the prompt for the SVC you want to modify for example box serial 3 2 frame relay 3 2 service 8 0 32 svc options toronto and enter excess burst in lt integer gt or excess burst out lt inleger gt integer is the number of bits the router can transmit per time interval The value can be from 0 to 2 147 483 647 bits The default is 0 For example the following command line sets an excess burst in value of 3 000 svc option toronto excess burst in 3000 svc option toronto 5 36 308624 14 10 Rev 01 Customizing SVCs CIR Throughput The CIR committed information rate or throughput defines the number of bits per second your carrier guarantees the router can transmit over a specified time interval when there is no congestion For SVCs you configure four parameters that define throughput cir in cir in minimum cir out and cir out minimum The cir in and cir out parameters specify the requested incoming and outgoing throughput kbits second when no congestion is occurring The cir in minimum and cir out minimum parameters specify the minimum acc
93. cond octet of the address field ADDR Q921 differs from ADDR Q922 MARCH 90 in that it does not use FECNs or BECNs which means that it does not provide congestion control Selecting a DLCI Address Length The options for the DLCI address length are 2 3 or 4 bytes To understand the distinctions among these byte formats see the illustrations of frame relay headers in Figure 1 2 and Figure 1 3 on page 1 6 You can use either the BCC or Site Manager to configure the DLCI address type and length 308624 14 10 Rev 01 3 5 Configuring Frame Relay Services Using the BCC To specify the address type navigate to the frame relay prompt for example box serial 1 2 frame relay 1 2 and enter address type lt value gt value can be q922 march q922 november q921 q922march90 q922november90 q922 the default For example the following command line sets the address type to q921 frame relay 1 2 address type q921 frame relay 1 2 To specify the address length navigate to the frame relay prompt for example box serial 1 2 frame relay 1 2 and enter address length lt nteger gt integer is a value of 2 3 or 4 bytes For example the following command line sets the address length to 4 bytes frame relay 1 2 address length 4 frame relay 1 2 3 6 308624 14 10 Rev 01 Using Site Manager Customizing Frame Relay Interfaces To specify the address type and length complete the following tasks Si
94. congestion method to throttle the virtual circuit sends only B bits of data over the time interval T when congestion occurs even if you have configured the B to a value greater than 0 It queues the excess data until congestion abates If you set the congestion method to throttle then shutdown the virtual circuit first queues traffic when congestion occurs and then terminates the virtual circuit if throttling does not alleviate congestion To configure the committed and excess burst rates see Using Traffic Shaping on page 4 21 or Using Traffic Shaping with SVCs on page 5 33 Quality of Service Quality of Service QoS is the second major component of Nortel Networks traffic shaping It uses protocol prioritization with traffic shaping You configure a prioritization filter on the default service record for the entire frame relay interface and CIR enforcement per virtual circuit VC QoS operates over Synchronous HSSI T1 E1 and ISDN lines for backup demand and for leased lines Although the HSSI driver does not support protocol prioritization VCs on an HSSI interface do Using protocol prioritization with traffic shaping creates two levels of queues For traffic shaping the queues are high normal low at the VC level For protocol prioritization they are interrupt shaping high normal low at the driver level Figure 1 10 illustrates this concept 308624 14 10 Rev 01 1 25 Configuring Frame Relay Services Shaped
95. cord that has the PVC you want to delete for example box serial 1 2 frame relay 1 2 service dallas and enter delete pvc lt port_number gt lt slot_number gt lt DLCI_number gt For example the following command line deletes PVCs 51 and 52 service dallas delete pvc 1 2 51 delete pvc 1 2 52 service dallas 308624 14 10 Rev 01 4 7 Configuring Frame Relay Services Using Site Manager To delete PVCs complete the following tasks Site Manager Procedure You do this System responds 1 In the Configuration Manager window click on a port configured for frame relay The Edit Connector window opens 2 Click on Edit Circuit The Frame Relay Circuit Definition window opens 3 Click on Services The Frame Relay Service List window opens 4 Click on PVCs The FR PVC List for Service window opens 5 Select the PVC entry that you want to delete 6 Click on Delete A configuration window opens and prompts Do you REALLY want to delete the Frame Relay PVC 7 Click on OK The confirmation window closes Site Manager removes the PVC entry from the FR PVC List for Service window 8 Click on Done until you return to the Configuration Manager window 308624 14 10 Rev 01 Customizing PVCs Moving PVCs from One Service Record to Another You can use Site Manager to move PVCs on the same line from one service record to another You can move PVCs to ex
96. ctive Circuit is configured but not active e xoff Specifies whether the router ignores or observes the XOFF bit in LMI e control Circuit is a control VC e starting Circuit is a starting VC Type Type of circuit configured on the interface pvc PVC was statically configured e dynamic pvc PVC was dynamically learned e sve VC isan SVC Hybrid Indicates that you can use the same PVC for both routing and bridging Service Service name associated with this PVC C 22 308624 14 10 Rev 01 A access modes description 1 15 acronyms xix Action Initiate parameter A 14 active state 1 9 Address Length parameter A 6 Address parameter A 6 address resolution for PVCs 1 18 address based distribution multiline 1 37 adjacent hosts configuring for IP and IPX 2 7 Annex A switch 3 2 Annex D switch 3 2 Bc configuring for PVCs 4 23 configuring for SVCs 5 36 description of 1 24 BCC customizing frame relay interfaces 3 1 customizing PVCs 4 1 customizing SVCs 5 1 show commands C 1 starting frame relay 2 2 Be configuring for PVCs 4 23 configuring for SVCs 5 36 description 1 24 BECN backward explicit congestion notification congestion control 1 22 definition of 1 5 308624 14 10 Rev 01 Index big pipe little pipe topology description 1 19 1 32 Broadcast Control parameter A 45 buffers for traffic shaping 1 31 C call blocking configuring 5 5 call pres
97. d be lower than the Core In Throughput value Choose a value appropriate to your network 1 3 6 1 4 1 18 3 5 9 9 10 1 25 LL Core Out Excess Burst Configuration Manager select a connector gt Edit Connector window gt Edit Circuit gt Services gt Frame Relay Service List window gt SVCs gt Add 0 0 to 21447463647 b s Specifies the outgoing excess burst size This value is added to the Core Out Committed Burst value to determine the maximum number of bits that may be transmitted during the VC s burst period when there is no congestion The Core Out Excess Burst plus the Core Out Committed Burst must be less than or equal to the line speed Choose a value appropriate to your network 1 3 6 1 4 1 18 3 5 9 9 10 1 26 308624 14 10 Rev 01 Parameter Path Default Options Function Instructions MIB Object ID Parameter Path Default Options Function Instructions MIB Object ID Site Manager Parameters LL Core In Excess Burst Configuration Manager select a connector gt Edit Connector window gt Edit Circuit gt Services gt Frame Relay Service List window gt SVCs gt Add 0 0 to 21447463647 b s Specifies the incoming excess burst size This value is added to the Core In Committed Burst value to determine the maximum number of bits that may be transmitted during the VC s burst period when there is no congestion The Core In Excess Burst plus the Core In Committed Burst must be less t
98. d initiate link setup Passive indicates that LAPF will hold SABME frames and take no action to initiate link setup To establish a LAPF link at least one end of the connection has to initiate link setup To have LAPF initiate link setup from this router accept the default Active To have LAPF take no action to initiate link setup set to Passive 1 3 6 1 4 1 18 3 5 9 9 7 1 7 308624 14 10 Rev 01 Parameter Path Default Options Function Instructions MIB Object ID Parameter Path Default Options Function Instructions MIB Object ID Site Manager Parameters T200 Base Timer Configuration Manager gt Protocols gt Interfaces gt LAPF 15 1 to 1200 tenths of a second Indicates the amount of time in tenths of a second that the router waits to receive an acknowledgment from its remote peer This timer is the general purpose retransmission timeout It is used during initiation of LAPF multiple frame support and for timeout of LAPF numbered information frames During initiation of LAPF multiple frame support an unnumbered command SABME frame is sent to the peer LAPF to request multiple frame communications on the link The peer LAPF responds with an unnumbered acknowledgment UA frame When multiple frame support has been established numbered command response information I frames are transmitted both ways across the connection These I frames carry an acknowledgment of the highest number
99. d negotiate QoS with the network set this parameter to Enable and also set the LL Core parameters To prevent the router from enforcing the CIR accept the default Disable and also set the LL Core parameters 1 3 6 1 4 1 18 3 5 9 9 10 1 32 308624 14 10 Rev 01 Configuring Frame Relay Services Parameter Path Default Options Function Instructions MIB Object ID WCP Enable Configuration Manager select a connector gt Edit Connector window gt Edit Circuit gt Services gt Frame Relay Service List window gt SVCs gt Add Enable Enable Disable Enables or disables compression services for this SVC Accept the default Enable to use compression on this SVC Choose Disable to disable but not delete compression services 1 3 6 1 4 1 18 3 5 9 9 10 1 33 A 56 308624 14 10 Rev 01 Appendix B RIP Management for Frame Relay SVCs IP and IPX use RIP to inform network entities of routing topology changes Both IP and IPX allow various controls over the frequency and destination of these packets Because RIP packets can affect whether and how the router establishes and disconnects frame relay SVCs these controls extend to frame relay SVCs Table B 1 lists the IP IPX and frame relay configuration attributes that affect frame relay SVCs and how they interact For more information about configuring RIP see Configuring IP ARP RARP RIP and OSPF Services and Configuring IPX Services 308624 14 10
100. d you can also configure them for individual SVCs When the router establishes an SVC the inactivity timer initializes two timers internal to the router one that monitors data the router transmits and one that monitors data the router receives The inactivity timer mode defines how the timers restart 308624 14 10 Rev 01 1 33 Configuring Frame Relay Services Table 1 7 shows the various ways you can set these parameters and the effect each combination has on disconnecting SVCs Table 1 7 Inactivity Timer and Inactivity Timer Mode Interaction Inactivity Timer Mode Inactivity Timers Used Disconnect SVC Both Directions Site Manager Both BCC Transmit and Receive When both timers expire no data transmitted and no data received during the timer interval Either Direction Site Manager Either BCC Transmit and Receive When either timer expires no data transmitted or no data received during the timer interval Inbound BCC Transmit Only Site Manager Transmit When the transmit timer expires no data Outbound BCC transmitted during the timer interval Receive Only Site Manager Receive When the receive timer expires no data received during the timer interval For instructions on setting these values for the inactivity parameters see Setting Inactivity Values for SVCs on page 5 22 Note that a protocol priority filter configured with a no reset action affec
101. data over the same data path if the traffic is going between the same source and destination address pair This method ensures the data arrives in sequence Select an algorithm for the multiline circuits 1 3 6 1 4 1 18 3 5 1 4 1 1 23 A 34 308624 14 10 Rev 01 Site Manager Parameters C Service Record Parameters This section contains the following information Topic Page SVC Service List Parameters A 35 SVC Options Parameters A 41 SVC Options List for Service Parameters A 44 SVC Service List Parameters The Frame Relay Service List window contains the SVC service list parameters Figure A 10 These parameters apply to all of the SVCs in a service record unless you configure SVCs individually with SVC Options parameters FE Suappenrt SWC Lecal Parity Muebsor BAC Local Party Sub Area S Loreal Pariy mbar Plan oC Local Party Tupa of Buber Figure A 10 Frame Relay Service List Window for SVCs 308624 14 10 Rev 01 A 35 Configuring Frame Relay Services Parameter Path Default Options Function Instructions MIB Object ID Parameter Path Default Options Function Instructions MIB Object ID To access the Frame Relay Service List window You do this Site Manager Procedure System responds 1 Click on the Protocols menu in the Configuration Manager menu bar The Protocols menu opens 2 Click on Frame Relay The
102. ds across the frame relay line will be less than you configured for the MTU value Data encryption 56 Synchronous MCT1 The router always subtracts the WEP WEP overhead MCE1 ISDN BRI header regardless of whether WCP is enabled Consequently the amount of data that the router sends across the frame relay line will be less than you configured for the MTU value Cyclic redundancy 2 or 4 Synchronous MCT1 The router always subtracts the CRC size check CRC MCE1 ISDN BRI Consequently the amount of data that the router sends across the frame relay line will be less than you configured for the MTU value The default CRC value is 2 Based on the values in Table 1 9 if you configure IP over frame relay on a synchronous line the largest IP datagram that the router transmits is 1539 This number is determined by taking the default MTU value 1600 and subtracting the overhead packet sizes for WCP 3 WEP 56 and the CRC 2 To ensure that the router sends an IP datagram size of 1600 bytes you must set the MTU value to 1661 For more information about the MTU parameter see Configuring WAN Line Services 1 40 308624 14 10 Rev 01 Chapter 2 Starting Frame Relay The quickest way to begin using frame relay on your network is to enable it with default values for all interface parameters and with a default service record that includes at least one permanent virtual circuit PVC or switched virtual c
103. e 8 myservice 8 myservice 8 myservice 8 myservice 8 OOO CO 32 Using Site Manager 32 svc local address e164 1234567 1234567 International 32 sve local address e164 1234567 1234567 Unknown 32 svce local address x121 1234567 1234567 International 32 sve local address e164 1234567 1234567 Unknown To add service records to a frame relay interface complete the following tasks Site Manager Procedure You do this System responds 1 In the Configuration Manager window choose Protocols The Protocols menu opens Choose Frame Relay 3 Choose Services The Frame Relay menu opens The Frame Relay Service List window opens Set the SVC Support parameter to Enable Click on Help or see the parameter description on page A 36 The SVC parameters become available Set the following parameters SVC Local Party Number SVC Local Party Sub Address optional e SVC Local Party Number Plan e SVC Local Party Type of Number Click on Help or see the parameter descriptions beginning on page A 37 continued 308624 14 10 Rev 01 Configuring Frame Relay Services Deleting Service Records for SVCs Site Manager Procedure continued You do this 6 Click on Apply System responds The SVC button replaces the Multiline button in the Frame Relay Service List window 7 Click on Done You return to the Configuration Manage
104. e Services The Frame Relay Service List window opens 4 Set the SVC Support parameter to Enable The SVC parameters become available 5 Set the following parameters SVC Local Party Number SVC Local Party Sub Address optional SVC Local Party Number Plan SVC Local Party Type of Number Click on Help or see the parameter descriptions beginning on page A 37 6 Click on Apply 7 Click on Done Site Manager replaces the Multiline button with the SVCs button in the Frame Relay Service List window You return to the Configuration Manager window Configuring Adjacent Hosts for an SVC Service Record If you are configuring IP or IPX for a frame relay SVC there are special considerations for configuring adjacent hosts An adjacent host is a device on a locally attached network it may or may not be a router For frame relay to operate properly the router must be able to resolve adjacent host addresses For each adjacent host that does not implement the address resolution protocol ARP you need to configure a MAC address or you must preempt the ARP process For more information about IP or IPX see Configuring IP ARP RARP RIP and OSPF Services or Configuring IPX Services for instructions on configuring adjacent hosts 308624 14 10 Rev 01 2 7 Chapter 3 Customizing Frame Relay Interfaces When you enable frame relay default values are in effect for all parameters Dependi
105. e at a time or add several PVCs at the same time To add one PVC navigate to the prompt for the service record to which you want to add the PVCs for example box serial 1 2 frame relay 1 2 service boston and enter pve lt DLCI_number gt 308624 14 10 Rev 01 4 5 Configuring Frame Relay Services For example the following command line creates a PVC with a DLCI of 20 service boston pve 20 pvc 3 2 20 To add more than one PVC navigate to the prompt for the service record to which you want to add PVCs for example box serial 1 2 frame relay 1 2 service 4 0 32 and enter pve lt DLCI_number gt pve lt DLCI_number gt pve lt DLCI_numbers For example the following command line creates PVCs with DLCI numbers 20 21 22 23 and 24 service boston pve 20 pvc 21 pvc 22 pvc 23 pvc 24 pvc 3 2 24 Note that the working context is now that of the PVC you created last Using Site Manager You can add PVCs either individually or in a range If you want to add one PVC enter one DLCI number If you want to add several PVCs enter the appropriate range of DLCI numbers in the format lt owest_DLCI_number gt lt highest_DLCI_numbers gt To add PVCs complete the following tasks Site Manager Procedure You do this 1 In the Configuration Manager window click on a port configured for frame relay System responds The Edit Connector window opens Click on Edit Circuit The Fra
106. e congestion Inherit the VC uses the congestion method from the DLCMI record Length of time in seconds during which the router counts congestion notifications Maximum number of congestion notifications that the router can receive during the timer period before it stops transmitting Number of outbound forward explicit congestion notifications Number of outbound backward explicit congestion notifications 308624 14 10 Rev 01 Configuring Frame Relay Services show frame relay multiline Displays information about frame relay service information for multiline and shows PVCs that are priority information for active frame relay SVCs The show frame relay multiline command supports the following subcommand options pvcs services In addition you can specify the following command filters and filter arguments with the subcommand options dici lt dici gt Displays only VCs with the specified DLCI name lt multiline_name gt Displays only multiline PVCs or services on the specified frame relay multiline show frame relay multiline pvcs Displays PVCs that are priority information for active frame relay SVCs The output contains the following information Interface Interface on which the frame relay SVC resides DLCI Name of the SVC associated with this circuit Service Name Service name associated with the multiline Multiline Name Name of the multiline circuit C 4 308624 14 10 Rev 01
107. e dlcmi prompt for example box serial 1 2 frame relay 1 2 dicmi and enter management type lt value gt value can be none Imi annex d the default annex a Imi switch annex d switch annex a switch For example the following command line changes the management type from Annex D Switch to LMI Switch dlcmi 1 2 management type Imi switch dlcmi 1 2 Using Site Manager To specify a management protocol complete the following tasks Site Manager Procedure You do this System responds 1 In the Configuration Manager window click on a port configured for frame relay The Edit Connector window opens Click on Edit Circuit The Frame Relay Circuit Definition window opens Click on Interfaces The Frame Relay Interface List window opens Set the Mgmnt Type parameter Click on Help or the see the parameter description on page A 5 Click on Apply continued 308624 14 10 Rev 01 Configuring Frame Relay Services Site Manager Procedure continued You do this System responds 6 Click on Done You return to the Frame Relay Circuit Definition window 7 Click on Done You return to the Configuration Manager window Setting XOFF Control If you choose LMI as the management protocol you can use the BCC to configure the XOFF control The XOFF control determines whether the router ignores or observes the XOFF bit XOFF control is enab
108. e router software handles various types of message exchanges Table 1 4 Message Processing Message Type Message Processing Call setup When the software receives a setup message it performs several validations before it can deliver the message to the called subscriber and return a call proceeding message to the calling subscriber The software must verify that all of the information fields in the message are in the proper order all of the mandatory elements are present and that all elements contain appropriate values Call proceeding Connect After the network determines that the setup message is valid and contains all the appropriate information it returns a call proceeding message to the calling subscriber When the network delivers the setup message to the called subscriber the called subscriber may then return a call proceeding message to the network When the called subscriber accepts a call it sends a connect message back to the network The network validates the message and checks any negotiable parameters If the message passes this inspection the network passes the message back to the calling subscriber Disconnect When a subscriber wants to terminate a call it sends a disconnect message to the network The network validates the messages and passes it to the peer subscriber The cause information element is mandatory in the disconnect message Under normal conditions it contains
109. eceive information frames XID Exchange ID indicates the station s identification information C 10 308624 14 10 Rev 01 Monitoring Frame Relay Using the BCC show Command show frame relay stats lapf traffic Displays LAPF traffic statistics for frame relay interfaces The output contains the following information Interface Unnumbered Frames Received Numbered Frames Received Unnumbered Frames Sent Numbered Frames Sent Interface on which the VC resides Number of frames received by LAPF in unnumbered format Number of frames received by LAPF Number of frames sent by LAPF in unnumbered format Number of frames sent by LAPF show frame relay stats lapf transmit Displays LAPF transmit statistics for frame relay interfaces The output contains the following information Interface Window SABME UA DISC DM FRMR REJ RNR Interface on which the frame relay VC resides Number of outstanding signaling messages allowed Set Asynchronous Balanced Mode Extended SABME command that initiates multiple frame operation Unnumbered acknowledgment UA is a response sent by a station upon receipt of a SABME or DISC command Disconnect DISC is a command that initiates the release of multiple frame operation Disconnect mode DM indicates the collision of commands and responses that prevent the initiation of multiple frame operations Frame reject FRMR indicates errors encountered that can
110. ecify for the congestion timer and congestion counter However you can configure PVCs individually at the service level In this case you can either disable congestion for an individual PVC or select other congestion control parameters for that PVC Configuring Congestion Control for an Interface You can use either the BCC or Site Manager to control congestion for an interface Using the BCC To configure congestion control for the interface you must first enable congestion control Then you can optionally configure the congestion timer congestion counter and congestion method 308624 14 10 Rev 01 4 15 Configuring Frame Relay Services Congestion Control Congestion control is disabled by default To enable congestion control navigate to the frame relay interface prompt for example box serial 1 2 frame relay 1 2 and enter congestion control enabled Enabling this parameter tells the router to drop all outbound traffic destined for a congested PVC until the congestion clears The value of this parameter affects all PVCs that you do not individually configure For example the following command line enables congestion control for this frame relay interface frame relay 1 2 congestion control enabled frame relay 1 2 Congestion Timer To change the value for the congestion timer navigate to the frame relay prompt for the interface for example box serial 1 2 frame relay 1 2 and enter congestion timer lt n
111. ect ID default Enable 1 3 6 1 4 1 18 3 5 9 9 10 1 2 Parameter Broadcast Control Path Configuration Manager gt Protocols gt Frame Relay gt Services gt SVCs Default Enable Options Enable Disable Function Specifies whether the router includes this interface in outbound broadcasts Instructions If you want this SVC to receive outbound broadcasts accept the default Enable MIB Object ID Otherwise choose Disable 1 3 6 1 4 1 18 3 5 9 9 10 1 11 308624 14 10 Rev 01 A 45 Configuring Frame Relay Services Parameter Path Default Options Function Instructions MIB Object ID Parameter Path Default Options Function Instructions MIB Object ID Inactivity Timer Configuration Manager gt Protocols gt Frame Relay gt Services gt SVCs 60 0 to 2147483647 seconds Amount of time in seconds before the SVC terminates because no data has traveled over the circuit in the direction you specify in the Inactivity Timer Mode parameter Accept the default or set to a value appropriate for your network 1 3 6 1 4 1 18 3 5 9 9 10 1 12 Inactivity Timer Mode Configuration Manager gt Protocols gt Frame Relay gt Services gt SVCs Transmit Only Transmit Only Receive Only Both Directions Either Direction Specifies the direction of the data that the SVC Inactivity Timer monitors to determine whether to keep an SVC up or to terminate it The options are Transmit Only onl
112. ect traffic through another bridge port However without hybrid access mode configured the frame relay bridge port views the paths to site A and site B as the same path Because the bridge does not send out data on the same port from which it just received data the bridge does not direct the data to site B In this case you should use hybrid access mode If you define the PVCs in hybrid mode see Figure 1 6 on page 1 16 each PVC acts as a separate bridge port This enables the bridge running on the frame relay interface to view the traffic from site A as arriving on a different port than that of site B When the bridge sends out data it sends it out from all ports including the port that has access to site B Therefore data from site A can reach site B You configure hybrid mode by enabling the Hybrid Mode parameter for PVCs For instructions see Configuring Hybrid Mode for PVCs on page 4 12 308624 14 10 Rev 01 1 17 Configuring Frame Relay Services Source Routing RFC 1490 Source routing is the method by which a bridge sends data across two networks The router supports source routing over frame relay networks using RFC 1490 standard frame relay data encapsulation To configure source routing see Configuring Bridging Services RFC 1490 defines the encapsulation method for sending data across a frame relay network Nortel Networks routers implement RFC 1490 for all protocols that Nortel Networks supports over frame
113. ejoy ewes 104 JuUswaebeueYY dIY Appendix C Monitoring Frame Relay Using the BCC show Command To display configuration and statistical data about frame relay use the BCC show command This appendix includes descriptions of the following show commands Topic Page Online Help for show Commands C 2 show frame relay congestion C 2 show frame relay multiline C 4 show frame relay services C5 show frame relay shaping C 6 show frame relay stats C 7 show frame relay summary FA show frame relay svcs C 19 show frame relay vcs C 21 308624 14 10 Rev 01 C 1 Configuring Frame Relay Services Online Help for show Commands To display a list of command options enter show frame relay at any BCC prompt To learn more about any show frame relay command option and its syntax use the question mark command as follows bcc gt show frame relay congestion services stats svcs multiline shaping summary vcs bcc gt show frame relay svcs calls priority shaping bcc gt show frame relay svcs calls show frame relay svcs calls interface lt arg gt service lt arg gt dlci lt arg gt show frame relay congestion Displays information about the congestion state and the configuration of frame relay VCs This command allows for the following command filters and filter arguments dici lt dlci gt Displays only frame relay VCs with the specified DLCI interface l
114. elay 1 2 and enter service lt service_name gt service_name identifies the service record For example the following command line creates a service record with the name boston frame relay 1 2 service boston service boston Using Site Manager To add a service record complete the following tasks Site Manager Procedure You do this System responds 1 In the Configuration Manager window The Edit Connector window opens click on a port configured for frame relay 2 Click on Edit Circuit The Frame Relay Circuit Definition window opens 3 Click on Services The Frame Relay Service List window opens 4 Click on Add The Frame Relay Service Add window opens continued 5 Set the DLCI Number parameter Click on Help or see the parameter description on page A 25 Note that Site Manager automatically configures the Service Name parameter 308624 14 10 Rev 01 4 3 Configuring Frame Relay Services Site Manager Procedure continued You do this 6 Click on OK System responds You return to the Frame Relay Service List window 7 Add more service records as your network requires by repeating steps 4 through 6 When you are finished click on Done You return to the Frame Relay Circuit Definition window 8 Click on Done You return to the Configuration Manager window Deleting Service Records You can use either the BCC or Site Manag
115. enhance the effectiveness of traffic shaping you may also want to modify values for the PVC congestion control and congestion method For more information about the interaction between these features and traffic shaping see Traffic Shaping Configuration Notes for PVCs and SVCs on page 1 29 You can use either the BCC or Site Manager to configure traffic shaping 308624 14 10 Rev 01 4 21 Configuring Frame Relay Services Using the BCC To enable traffic shaping you configure the following parameters normal queue limit high queue limit low queue limit committed burst excess burst and throughput Normal High and Low Queue Limits There are three queue limits for traffic shaping the normal queue the high queue and the low queue You can configure these queue limits for a frame relay interface and a PVC The interface queue limit is the total number of buffers that all traffic shaped PVCs in the interface s service records may place in a specific queue The PVC queue limit specifies the maximum number of buffers that traffic shaped PVCs may place in a specific queue To change a queue limit navigate to the interface prompt for example box serial 1 2 frame relay 1 2 or the appropriate PVC prompt for example box serial 1 2 frame relay 1 2 boston pvce 1 2 51 and enter one of the following commands normal queue limit lt integer gt high queue limit lt integer gt low queue limit lt integer gt
116. ent services for the DCE side of the connection as specified in Annex D to ANSI standard T1 617 1991 Annex A Switch provides limited management services for the DCE side of the connection as specified by the ITU T Instructions Select the management protocol for the frame relay network MIB Object ID 1 3 6 1 4 1 18 3 5 9 9 1 1 6 308624 14 10 Rev 01 A 5 Configuring Frame Relay Services Parameter Path Default Options Function Instructions MIB Object ID Parameter Path Default Options Function Instructions MIB Object ID Address Configuration Manager gt Protocols gt Frame Relay gt Interfaces ADDR Q922 ADDR Q922 ADDR Q922 November 90 ADDR Q922 MARCH 90 ADDR Q921 Specifies the DLCI addressing type ADDR Q922 selects addressing as specified in the final version of the Q 922 standard Q 922 provides for FECN BECN DE and EA bits While most Q 922 addresses are included within a 2 octet field the standard allows for 3 and 4 octet address fields The November draft of ADDR Q922 differs from ADDR Q922 in dropping the D C bit from the extended 3 and 4 byte forms The March draft of ADDR Q922 differs from ADDR Q922 in defining an 11 bit DLCI and dropping the DE bit from the second octet of the address field ADDR Q921 differs from ADDR Q922 MARCH 90 in that it does not use FECNs or BECNs Select the addressing type for the frame relay interface 1 3 6 1 4 1 1
117. ent state for LAPF 1 12 call screening configuring 5 6 CIR configuration guidelines 1 29 configuring as 0 1 24 configuring for PVCs 4 24 configuring for SVCs 5 37 definition 1 23 enforcement 1 24 maximum value 1 24 Circuit State Set parameter A 27 Committed Burst parameter A 28 committed burst rate See Bc committed information rate See CIR Compression Control parameter A 31 compression See data compression 1 20 congestion control configuring for PVCs 4 15 configuring for SVCs 5 26 counters and timers for traffic shaping 1 32 description 1 22 Congestion Control parameter A 9 A 29 Congestion Counter parameter A 10 A 30 A 54 Congestion Disable parameter A 53 Congestion Method parameter A 11 A 31 A 55 Congestion Timer parameter A 10 A 30 A 54 Index 1 conventions text xviii customer support xxii customizing frame relay 3 1 4 1 5 1 D data clipping for traffic shaping 1 31 data compression 5 40 description 1 20 reenabling for PVCs 4 26 with traffic shaping 1 30 data link control identifier DLCT 1 5 default service record 1 14 deleting frame relay service 3 12 PVCs 4 7 service records for PVCs 4 4 service records for SVCs 5 4 dial services backup and demand for frame relay circuits 1 38 direct mode description 1 16 disabling SVCs 5 9 DLCI address length selecting 3 5 DLCI address type selecting 3 5 DLCI Number parameter A 25 DLCMI Da
118. eptable incoming and outgoing throughput kbits second To change the value of cir in or cir out navigate to the prompt for the SVC you want to modify for example box serial 3 2 frame relay 3 2 service 8 0 32 svc options toronto and enter cir in lt integer gt or cir out lt integer gt integer is the number of bits the router can transmit per time interval The value can be from 0 to 2 147 483 647 bits The default is 0 For example the following command line sets a cir in value of 10 000 bits svc option toronto Cir in 10000 svc option toronto To change the value of cir in minimum or cir out minimum navigate to the prompt for the SVC you want to modify for example box serial 3 2 frame relay 3 2 service 8 0 32 svc options toronto and enter cir in minimum lt nteger gt or cir out minimum lt integer gt integer is the number of bits the router can transmit per time interval The value can be from 0 to 2 147 483 647 bits The default is 0 308624 14 10 Rev 01 5 37 Configuring Frame Relay Services For example the following command line sets a cir in minimum value of 10 000 bits svc option toronto Cir in minimum 10000 svc option toronto Using Site Manager To customize traffic shaping quality of service complete the following tasks Site Manager Procedure You do this System responds 1 In the Configuration Manager window choose Protocols The Protocols menu opens
119. er connected SVCs packets are received within the e Any SVCs configured as _ inactivity timer interval the adjacent hosts that are not SVC disconnects connected will remain disconnected SVCs will not connect and will not send RIP packets continued SOAS Aejey ewes 104 JuUswebeueyy dIY v d LO A8Y OL Vl 7e980E Table B 1 RIP Parameters continued IP or IPX RIP Frame Relay Frame Relay IP or IPX SVC Broadcast SVC Inactivity Inactivity Timer Inactivity Timer RIP Enable Enable Timer Mode RIP Timer RIP Timer Functionality Functionality Enabled Enabled Either Direction Inactivity lt RIP When the RIP timer expires If no non RIP packets are e RIP packets will be sent transmitted or if no packets are over connected SVCs received within the inactivity e Any SVCs configured as _ timer interval the SVC adjacent hosts that are not disconnects connected will connect to send RIP packets Enabled Disabled Either Direction Inactivity lt RIP When the RIP timer expires If no non RIP packets are e RIP packets will be sent transmitted or if no packets are over connected SVCs received within the inactivity e Any SVCs configured as _ timer interval the SVC adjacent hosts that are not disconnects connected will remain disconnected SVCs will not connect and will not send RIP packets Disabled Enabled or Either Direction RIP timer not Not applic
120. er to delete service records for PVCs Using the BCC To delete a service record navigate to the frame relay prompt for example box serial 1 2 frame relay 1 2 and enter delete service lt service_name gt service_name identifies the service record For example the following command line deletes a service record with the name dallas frame relay 1 2 delete service dallas frame relay 1 2 308624 14 10 Rev 01 Customizing PVCs Using Site Manager While frame relay is enabled you can delete any individual service record except the default service record To delete a frame relay service record complete the following tasks Site Manager Procedure You do this System responds 1 In the Configuration Manager window The Protocols menu opens choose Protocols 2 Choose Frame Relay The Frame Relay menu opens 3 Choose Services The Frame Relay Service List window opens 4 Select a service record then click on Site Manager displays a confirmation Delete window that prompts Do you REALLY want to delete the FR servic record 5 Click on OK The confirmation window closes and Site Manager removes the record from the list 6 Click on Done You return to the Configuration Manager window Adding PVCs to Service Records You can use either the BCC or Site Manager to add PVCs to existing service records Using the BCC You can add PVCs to a service record on
121. erval Configuration Manager gt Protocols gt Frame Relay gt Interfaces 6 1 to 255 polling intervals Specifies the interval between full status inquiry messages that the router transmits Full status inquiry messages cause the network to send a full status report message which lists all VCs the VC status active or inactive and new or previously established This parameter works with the Polling Interval parameter The default value 6 tells the router to send a full status inquiry every 6 polling intervals For example with a polling interval of 10 and a full enquiry interval of 6 the router transmits a full status inquiry every 60 seconds with a polling interval of 20 and a full enquiry interval of 30 the router transmits a full status inquiry every 10 minutes 600 seconds Enter a value from to 255 according to what the network dictates Full Enquiry Interval does not function if you set Mgmnt Type to DLCMI None 1 3 6 1 4 1 18 3 5 9 9 1 1 11 308624 14 10 Rev 01 A 7 Configuring Frame Relay Services Parameter Path Default Options Function Instructions MIB Object ID Parameter Path Default Options Function Instructions MIB Object ID Error Threshold Configuration Manager gt Protocols gt Frame Relay gt Interfaces 3 0 to 2147483647 Together with the value of the Monitored Events parameter establishes a criterion to evaluate the quality of the router frame relay networ
122. es Interface on which the frame relay circuit resides Name of the main frame relay circuit associated with this interface Type of Data Link Control Management Interface DLCMI configured for the interface as follows Annex A Management services as specified by ITU Annex A Annex D Management services as specified in Annex D to ANSI standard T1 617 Annex A Sw Management services for the DCE side of the connection Annex A Annex D Sw Management services for the DCE side of the connection Annex D to T1 617 LMI Management services as specified by Revision 1 of the Local Management Interface standard LMI Sw Management services for the DCE side of LMI None No management interface between the router and the frame relay network Interface type Normal leased service with no backup service Primary Shared the backup circuit uses the primary configuration Primary Secondary the backup circuit uses its own configuration State of the interface as follows e Fault Interface is not operating Init Interface is initializing has not yet started NotPres Interface is not yet present e Running Interface is operating properly Number of times the interface has been in fault mode Total number of VCs configured on the interface Total number of VCs active on the interface Total number of frame relay service records or circuits 308624 14 10 Rev 01 Monit
123. es Parameter Path Default Options Function Instructions MIB Object ID Parameter Path Default Options Function Instructions MIB Object ID To access the Frame Relay Signaling Parameters window Site Manager Procedure You do this System responds 1 In the Configuration Manager choose Protocols The Protocols menu opens 2 Choose Frame Relay The Frame Relay menu opens 3 Choose Interfaces 4 Click on the Signaling button The Frame Relay Interface List window opens The Frame Relay Signaling Parameters window opens Signaling Control Configuration Manager gt Protocols gt Frame Relay gt Interfaces gt Signaling Enable Enable Disable Enables or disables signaling on this interface To use signaling on the interface accept the default Enable If you do not want to use signaling choose Disable 1 3 6 1 4 1 18 3 5 9 9 9 1 2 Max SVCs Configuration Manager gt Protocols gt Interfaces gt Signaling 100 1 to 2147483647 Indicates the maximum number of simultaneous switched virtual circuits allowed on the port The more SVCs you allow on the port the larger the system memory required to support them Enter the maximum number of simultaneous SVCs per port for your network 1 3 6 1 4 1 18 3 5 9 9 9 1 5 A 18 308624 14 10 Rev 01 Parameter Path Default Options Function Instructions MIB Object ID Parameter
124. ess Length THO BYTE Polling Interval 10 Full Enquiry Interval 6 Figure A 1 Frame Relay Interface List Window for PVCs A 2 308624 14 10 Rev 01 Site Manager Parameters If you have configured any SVCs you see a window similar to the one in which includes buttons for LAPF and Signaling FR Slot 2 COM1 Done Apply FR Slot 4 COM2 FR Slot 5 COM1 Eont Signaling Values Help jad mmm a Enable ENABLE Mgmnt Type ANSI Ti 617D Address ADDR 0922 Address Length THO BYTE Polling Interval 10 Full Enquiry Interval 6 Figure A 2 Frame Relay Interface List Window for SVCs To access the Frame Relay Interface List window Site Manager Procedure You do this System responds 1 In the Configuration Manager choose The Protocols menu opens Protocols 2 Choose Frame Relay The Frame Relay menu opens 3 Choose Interfaces The Frame Relay Interface List window opens 308624 14 10 Rev 01 A 3 Configuring Frame Relay Services Frame Relay Interface parameters are the same for PVCs and SVCs Use the descriptions that follow when you modify these parameters Parameter Enable Path Configuration Manager gt Protocols gt Frame Relay gt Interfaces Default Enable Options Enable Disable Function Enables or disables frame relay service on this interface Instructions To disable frame relay service on this interface without deleting it set to Disable To reen
125. essage processing 1 13 description of 1 8 disconnect message processing 1 13 exchange identification XID frames 1 9 incoming call proceeding 1 12 N200 retransmission timeout 1 10 numbered supervisory frames 1 9 operational states 1 9 parameters modifying 5 11 release message processing 1 14 release request state 1 12 retransmission timeouts 1 10 retransmission timer 1 10 setup processing 1 13 SVC signaling 1 8 1 11 T200 retransmission timeout 1 10 T203 retransmission timeout 1 11 TE assigned state 1 9 timeout timer 1 9 1 10 timer recovery state 1 9 unnumbered control frames 1 9 link management call present state 1 12 call proceeding processing 1 13 call setup processing 1 11 1 13 categories of LAPF management frames 1 9 connect message processing 1 13 disconnect message 1 13 exchange identification XID frames 1 9 incoming call proceeding 1 12 LAPF operational states 1 9 LAPF timeout and retransmission timers 1 9 1 10 308624 14 10 Rev 01 numbered information frames 1 9 numbered supervisor frames 1 9 release message 1 14 release request state 1 12 SVC signaling 1 8 1 11 timers 1 12 unnumbered control frames 1 9 LL Core In Committed Burst parameter A 52 LL Core In Excess Burst parameter A 53 LL Core In Throughput parameter A 50 LL Core Min In Throughput parameter A 51 LL Core Min Out Throughput parameter A 50 LL Core Out Committed Burst parameter A 51 LL Core Out E
126. estion notifications set by the Congestion Counter parameter the router stops transmitting data The router resumes transmission once it stops receiving congestion notifications Set the length of time the router should count congestion notifications from the network If you set this parameter for a long time period the router may be less likely to stop transmission for an intermittent congestion condition However the router may be slow to detect congestion resulting in long transmission delays once the congestion has cleared 1 3 6 1 4 1 18 3 5 9 9 10 1 29 Congestion Counter Configuration Manager select a connector gt Edit Connector window gt Edit Circuit gt Services gt Frame Relay Service List window gt SVCs gt Add 20 1 to 500 notifications Indicates the maximum number of congestion notifications that the router can receive during the congestion timer period before it stops transmitting If the router reaches the value set by this parameter it determines the line is congested and stops transmitting Set the congestion count The smaller the number the more quickly the router detects congestion and stops transmitting The value of this parameter applies to all VCs that you do not individually configure 1 3 6 1 4 1 18 3 5 9 9 10 1 30 A 54 308624 14 10 Rev 01 Parameter Path Default Options Function Instructions MIB Object ID Parameter Path Default Options Function Instructions
127. ets will be sent within the inactivity timer over connected SVCs interval the SVC disconnects e Any SVCs configured as adjacent hosts that are not connected will remain disconnected SVCs will not connect and will not send RIP packets Enabled Enabled Receive Inactivity lt RIP When the RIP timer expires If no packets are received e RIP packets will be sent within the inactivity timer over connected SVCs interval the SVC disconnects e Any SVCs configured as adjacent hosts that are not connected will connect to send RIP packets continued S8dIMas Aejay swes4 BuunbyuoD LO A8Y OL Vl 7e980E 4 4 Table B 1 RIP Parameters continued IP or IPX RIP Frame Relay Frame Relay IP or IPX SVC Broadcast SVC Inactivity Inactivity Timer Inactivity Timer RIP Enable Enable Timer Mode RIP Timer RIP Timer Functionality Functionality Enabled Disabled Receive Inactivity lt RIP When the RIP timer expires If no packets are received e RIP packets will be sent within the inactivity timer over connected SVCs interval the SVC disconnects e Any SVCs configured as adjacent hosts that are not connected will remain disconnected SVCs will not connect and will not send RIP packets Disabled Enabled or Receive RIP timer not Not applicable RIP is If no packets are received Disabled applicable RIP disabled within the inactivity timer is disabled interval the SVC disconnects SOAS A
128. f the CIR For example a typical TFTP frame is 548 bytes If the CIR is 16 000 bits the Bo configured according to the 1 4 guideline would be 4 000 bits or 500 bytes which is not big enough to accommodate a TFTP frame 308624 14 10 Rev 01 1 29 Configuring Frame Relay Services If you set the B to 16 000 2 or 1 2 CIR the result is 8 000 bits or a packet size of 1 000 bytes which works but may result in excessive queuing because the T is 1 2 second If you set the B to 16 000 3 or 1 3 CIR the result is a Be of 5 333 bits or 666 bytes much closer to the 548 TFTP frame size If you cannot predict the typical frame size monitor frame relay shaping statistics for numbers of large frames and dropped frames If either of these numbers is increasing constantly or dramatically adjust the B to a higher value in small increments Using Data Compression and Traffic Shaping Consider the following when you are configuring data compression and traffic shaping for your network Data compression maximizes throughput and increases reliability You can use compression effectively in the case of the 64 KB site that does not use traffic shaping You can also compensate for the throughput cost associated with using compression and traffic shaping at the central site by taking into account characteristics of compression and traffic shaping and fine tuning traffic shaping parameters When you configure traffic shaping consider the co
129. following subcommand options dicmi shaping errors signalling lapf vcs show frame relay stats dicmi Displays inbound and outbound statistics for frame relay DLCMIs This command allows for the following command filter and filter argument interface lt name gt Displays only DLCMI interfaces configured on the specified interface The output contains the following information Interface Maximum Number of VCs Current Number of VCs Sequence Counter Received Sequence Passive Sequence Passive Received Interface on which the DLCMI resides Number of DLCMIs associated with this circuit Total number of DLCMIs configured on the router Next send sequence counter for DLCMI messages sent by the station Send sequence number received in the last DLCMI message This station s send sequence for answering the DLCMI status enquiry message The sequence number received in the last DLCMI status enquiry message continued 308624 14 10 Rev 01 C 7 Configuring Frame Relay Services Polls Whether the station requests a full status report from the network or requests only a sequence number verification from the network Polls Missing Number of missing status messages not received from a status enquiry show frame relay stats error Displays error statistics for frame relay interfaces This command allows for the following command filter and filter argument interface lt name gt Dis
130. for SVCs works according to the descriptions in the previous sections except that SVCs derive the committed burst excess burst and throughput values from a combination of the traffic shaping parameters that you configure and values that the frame relay network imposes The values that the network imposes are called link layer core LL Core values Requesting Quality of Service When you configure traffic shaping for an SVC you have several alternatives to achieve the quality of service that will best serve your network e You can enable SVC traffic shaping without providing values for the traffic shaping parameters The SVCs you configure in this way use LL Core values that the network provides 308624 14 10 Rev 01 1 27 Configuring Frame Relay Services e You can enable SVC traffic shaping and provide values for the LL Core traffic shaping parameters If you supply values for the LL Core parameters the router can only request from the frame relay network an SVC with that configured quality of service The actual values for the burst capacity and throughput that the network supplies may be less than requested because the local router the network and the remote end negotiate the actual quality of service To track the values an SVC uses use the Site Manager Statistics Manager see Configuring and Managing Routers with Site Manager or use the BCC show commands for SVCs see Appendix C Monitoring Frame Relay Using the BCC show C
131. frame received by the sending LAPF In the event of a timeout the sending platform retransmits the frame up to the maximum number of times specified by the N200 Max Retries parameter Set to the retransmission timeout value appropriate for your network 1 3 6 1 4 1 18 3 5 9 9 7 1 8 T203 Idle Timer Configuration Manager gt Protocols gt Interfaces gt LAPF 30 1 to 120 seconds Indicates the amount of time in seconds that the router allows for idle time with no data being transmitted In the event of a timeout the router initiates a frame handshake to check whether the connection is still up Set to the idle time value appropriate for your network 1 3 6 1 4 1 18 3 5 9 9 7 1 9 308624 14 10 Rev 01 Configuring Frame Relay Services Parameter Path Default Options Function Instructions MIB Object ID Parameter Path Default Options Function Instructions MIB Object ID Parameter Path Default Options Function Instructions MIB Object ID N200 Max Retries Configuration Manager gt Protocols gt Interfaces gt LAPF 3 1 to 20 Indicates the maximum number of LAPF retransmissions allowed on a connection after the T200 Base Timer expires before the connection terminates Set to the value of retransmissions appropriate for your network 1 3 6 1 4 1 18 3 5 9 9 7 1 10 N201 Max Frame Size Configuration Manager gt Protocols gt Interfaces gt LAPF 260 260 to 2052 octets
132. gle network address to send all traffic destined for the switched network to the frame relay network interface When you configure each router you assign only one network address for example an IP or IPX address to the frame relay interface not to each VC The Data Link Control Management Interface DLCMD dynamically configures VCs on the default service record you do not need to explicitly configure them Service records in group mode e Allow multiple groups of PVCs per frame relay connection e Enable you to gather multiple VCs for each network protocol into a separate group or service record thereby reducing the number of buffers needed per circuit during broadcasts e Lower customer costs by creating multiple broadcast domains 308624 14 10 Rev 01 1 15 Configuring Frame Relay Services Direct Access Mode Direct mode describes a service record with one PVC In direct access mode upper layer protocols treat the frame relay network as a series of point to point connections The upper layer protocols view each PVC as an individual network interface Service records in direct access mode e Limit broadcasts to one PVC e Enable multiple layer 3 networks per interface Hybrid Access Mode Hybrid access mode as its name implies combines characteristics of group and direct access modes Frame relay hybrid mode enables you to use the same PVCs for both routing and bridging It works only for non fully meshed network c
133. gt Protocols gt Frame Relay gt Services Both Directions Both Directions Transmit Only Receive Only Either Direction Specifies the direction of the data that the SVC Inactivity Timer monitors in determining whether to keep an SVC up or to terminate it The options are Transmit Only only data transmitted by the router prevents the expiration of the inactivity timer If the router does not transmit any data the inactivity timer expires and disconnects the SVC Receive Only only data received by the router prevents the expiration of the inactivity timer If the router does not receive any data the inactivity timer expires and disconnects the SVC Both Directions only data transmitted AND received by the router prevents the expiration of the inactivity timer If the router does not transmit and receive data the inactivity timer expires and disconnects the SVC Either Direction only data transmitted OR received by the router prevents the expiration of the inactivity timer If the router does not transmit or receive data the inactivity timer expires and disconnects the SVC Select an option appropriate for your network 1 3 6 1 4 1 18 3 5 9 9 5 1 26 A 40 308624 14 10 Rev 01 Site Manager Parameters SVC Options Parameters You can edit SVC Options parameters in the Frame Relay SVC Options Add window Figure A 11 Cancel OK alues Help Options Name 202101 0 1 2 Remote Party Sub Address
134. han or equal to the line speed Choose a value appropriate to your network 1 3 6 1 4 1 18 3 5 9 9 10 1 27 Congestion Disable Configuration Manager select a connector gt Edit Connector window gt Edit Circuit gt Services gt Frame Relay Service List window gt SVCs gt Add Inherit Enable Disable Inherit Specifies whether and how this SVC will use congestion control Inherit means that this SVC uses the value in the interface Congestion Control parameter Enable activates congestion control for this SVC regardless of the interface s parameter setting If you enable congestion control the router drops all outbound traffic from this SVC while congestion is occurring Disable means that the SVC will not use congestion control Accept the default or choose another value appropriate to your network 1 3 6 1 4 1 18 3 5 9 9 10 1 28 308624 14 10 Rev 01 Configuring Frame Relay Services Parameter Path Default Options Function Instructions MIB Object ID Parameter Path Default Options Function Instructions MIB Object ID Congestion Timer Configuration Manager select a connector gt Edit Connector window gt Edit Circuit gt Services gt Frame Relay Service List window gt SVCs gt Add 1 0 5 to 5 seconds in 0 5 second intervals Specifies the length of time in seconds during which the router counts congestion notifications If the router receives the number of cong
135. hanne Coquentennctedanimpacedeanepcaneeans 1 21 GPU EMD aoso E i ea ASe ales SEE 1 22 Traffic Shaping P E PATT T eruan arnan T T PET PAT 1 23 Committed Information Rate HAUGH A eae 1 23 Committed Burst Rate and Excess Burst Rate cccscceseeeeeeeeeeeseeeeeeeeeeeeeeeee 1 24 BIETE Gs P E E N EAE A E E A E 1 25 Tale Spapno Tor Sy OGE arrena A AA 1 27 Requesting Quality of Service asuti annoi ara T ai PEET A 1 27 PRET Qualy OR SANG rrasa a a a eaten 1 28 Traffic Shaping Configuration Notes for PVCs and SVCS 0 ececeeeeeeeeeteeeeteeeeeeees 1 29 CIR Configuration Guidelines P EE PTEE E E PE ariaa PE 1 29 Using Data Compression and Traffic Shaping E IAA EAAS o i Oversubscribing the Traffic Shaping Interface ccccceeseteeeeneeeeeeeeeeneeeees 1 31 Queue Limits and Data CIPping sirieias 1 31 Conggstion Counters and TIMES sxsciiit tetera eiaa 1 32 A218 Priority for SVCS ca ccscvesenteevses T perapan PAN aou laiat aioin were ie 183 NARA Timid O OVOS anae ciena ied dasedante e aE E 1 33 Managing Routing Information Protocol RIP and Inactivity Timing 0 1 34 DURE Tor PS a bsc canted Se rtcmascs tatoo viewadss read Gadades bee ade teneiee aN a 1 85 Traffic Distribution Between Dala Paths E E E E A E aR E 1 36 Random DIStibUUON sini cosa dasadnaen damchnsieseane debbie Suduaterrantaaudeaciounionraeamicadiuaahin 1 36 Addr ss Based DiSTHOUOR siccsccsscsececcmnimedocscunesececantesenemnmmeccdctain
136. haping 4 21 Disabling and Reenabling Data Compression for PVCs 4 26 Grouping Service Records for Multiline Mode 4 27 308624 14 10 Rev 01 4 1 Configuring Frame Relay Services Configuring PVCs Using the BCC or Site Manager Table 4 1 lists the PVC configuration tasks described in this chapter and indicates whether you can use the BCC or Site Manager to perform each task Table 4 1 PVC Configuration Tasks Task BCC Site Manager Adding Service Records Deleting Service Records Adding PVCs to Service Records Deleting PVCs from Service Records SISTSTS Moving PVCs from One Service Record to Another Enabling Multicast Configuring Hybrid Mode for PVCs Configuring PVC Pass Through Controlling Congestion for PVCs Using Traffic Shaping Disabling and Reenabling Data Compression for PVCs Grouping Service Records for Multiline Mode S lt 5 SSS SS SS SS A 4 2 308624 14 10 Rev 01 Customizing PVCs Adding Service Records A service record is a data structure that allows flexible grouping and characterization of PVCs You can add and delete service records from your frame relay interfaces When you add a new service record it automatically creates one PVC to which you must assign a DLCI number Using the BCC To add a service record navigate to the frame relay prompt for example box serial 1 2 frame r
137. he default service record or by adding a service record Use these instructions to configure SVCs on the default service record To configure SVCs on service records that you add see Adding SVC Options to Service Records on page 5 7 Using the BCC To add an SVC to the default service record complete the following tasks 1 Navigate to the frame relay prompt For example box serial 3 1 frame relay 1 2 2 Navigate to the default service prompt The BCC context changes to the default service record For example frame relay 1 2 default service default service 1 2 3 Create an SVC by enabling SVC control For example default service 1 2 sve control enable 4 Specify the SVC local address For example default service 1 2 svc local address lt address gt address can be any valid X 121 or E 164 address For example svc local address e164 1234567 1234567 International svc local address x121 1234567 1234567 International You have now added an SVC to the default service record Repeat this procedure to add more SVCs according your network requirements 2 6 308624 14 10 Rev 01 Using Site Manager Starting Frame Relay To configure an SVC complete the following tasks Site Manager Procedure You do this System responds 1 In the Configuration Manager window choose Protocols The Protocols menu opens 2 Choose Frame Relay The Frame Relay menu opens 3 Choos
138. ical topics e The Technical Manuals section lists available printed documentation sets 308624 14 10 Rev 01 xxi Configuring Frame Relay Services How to Get Help If you purchased a service contract for your Nortel Networks product from a distributor or authorized reseller contact the technical support staff for that distributor or reseller for assistance If you purchased a Nortel Networks service program contact one of the following Nortel Networks Technical Solutions Centers Technical Solutions Center Telephone Number Billerica MA 800 2LANWAN 800 252 6926 Santa Clara CA 800 2LANWAN 800 252 6926 Valbonne France 33 4 92 96 69 68 Sydney Australia 61 2 9927 8800 Tokyo Japan 81 3 5402 7041 xxii 308624 14 10 Rev 01 Chapter 1 Frame Relay Overview The following sections present an overview of frame relay Topic Page Introduction to Frame Relay 1 2 Permanent Virtual Circuits 1 3 Switched Virtual Circuits 1 4 PVC and SVC Comparison 1 4 Frame Relay Packets 1 5 Management Protocols 1 7 Frame Relay SVC Signaling and LAPF 1 8 SVC Signaling 1 11 Frame Relay Service Records 1 14 Frame Relay Access Modes 1215 rce Routin 1 1 REC 1490 1 18 Address Resolution for PVCs 1 18 Address Resolution for SVCs 1 19 Traffic Control 1 19 Data Compression 1 20 Data Encry
139. ing tasks Site Manager Procedure You do this System responds 1 In the Configuration Manager window click on a port configured for frame relay The Edit Connector window opens Click on Edit Circuit Click on Interfaces The Frame Relay Circuit Definition window opens The Frame Relay Interface List window opens Set the following parameters Polling Interval Full Enquiry Interval Error Threshold e Monitored Events Click on Help or see the parameter descriptions beginning on page A 7 5 Click on Apply 6 Click on Done You return to the Frame Relay Circuit Definition window Click on Done You return to the Configuration Manager window 308624 14 10 Rev 01 3 11 Configuring Frame Relay Services Deleting Frame Relay To delete a frame relay service record complete the following tasks Site Manager Procedure You do this System responds 1 In the Configuration Manager window choose Protocols The Protocols menu opens 2 Choose Frame Relay The Frame Relay menu opens 3 Choose Services The Frame Relay Service List window opens 4 Select a service record then click on A confirmation window opens and Delete prompts Do you REALLY want to delete the FR service record 5 Click on OK The confirmation window closes and Site Manager removes the record from the list 6 Click on Done
140. ing them to the frame relay network Extended address bit EA The EA bit signals whether the next byte is part of the address This bit indicates the last byte of the DLCI 308624 14 10 Rev 01 Configuring Frame Relay Services Frame relay header Information data DLCI high order DLCI low order ZOmo FRO002A Figure 1 2 Frame Relay Header 2 Byte Format Figure 1 2 shows the frame relay header as a 2 byte structure Frame relay can also format the header using 3 or 4 bytes as shown in Figure 1 3 Note however that you must configure the frame relay interface on the router to use the same header length as the switched network to which it is connected 3 byte format 4 byte format 8 7 6 5 4 3 2 1 8 7 6 5 4 3 2 1 DLCI high order C R EA DLCI high order DLCI DLCI EA DLCI low order or DLCI low order pic EA or DL CORE control DL CORE control FROO03A B E C N Figure 1 3 Frame Relay Header 3 and 4 Byte Formats 1 6 308624 14 10 Rev 01 Frame Relay Overview Management Protocols Frame relay is an access protocol that runs between a router or data terminal equipment DTE and a switch or data communications equipment DCE The router and the switch use the Data Link Control Management Interface DLCMI to exchange information about the interface and the status of each virtual circuit Figure 1 4 Network node switch I gt gt
141. interface To activate congestion control set to Enable This value tells the router to drop all traffic destined for a congested PVC until the congestion clears To deactivate congestion control set to Disable If you want the Congestion Control setting for this PVC to match the setting you specify for the frame relay Interface Congestion Control parameter accept the default Inherit 1 3 6 1 4 1 18 3 5 9 9 2 1 25 308624 14 10 Rev 01 A 29 Configuring Frame Relay Services Parameter Path Default Options Function Instructions MIB Object ID Parameter Path Default Options Function Instructions MIB Object ID Congestion Timer Configuration Manager gt Protocols gt Frame Relay gt Services gt PVCs 1 0 5 to 5 seconds in 0 5 second intervals Specifies the length of time in seconds during which the router counts congestion notifications If the router receives the number of congestion notifications set by the Congestion Counter parameter the router stops transmitting data The router resumes transmission once it stops receiving congestion notifications Set the length of time the router should count congestion notifications from the network If you set this parameter for a long time period the router may be less likely to stop transmission for an intermittent congestion condition However the router may be slow to detect congestion resulting in long transmission delays once the congestion h
142. iority values complete the following tasks Site Manager Procedure You do this System responds 1 In the Configuration Manager window choose Protocols 2 Choose Frame Relay The Protocols menu opens The Frame Relay menu opens 3 Choose Services The Frame Relay Service List window opens 4 Choose the service record that includes the SVC that you want to configure for traffic shaping 5 Click on SVCs The Frame Relay SVC Options List for Service window opens continued 5 42 308624 14 10 Rev 01 Customizing SVCs Site Manager Procedure continued 6 You do this Choose the SVC record whose values for the following parameters match the remote end of the SVC connection Remote Party Number Remote Party Sub Address Remote Party Number Plan Remote Party Type of Number Click on Help or see the parameter descriptions beginning on page A 42 System responds Set the following parameters X 213 Data Priority X 213 Data LQA Priority X 213 Gain Priority X 213 Gain LQA Priority X 213 Keep Priority X 213 Keep LQA Priority Click on Help or see the parameter descriptions beginning on page A 47 8 Click on Apply 9 Click on Done 10 Click on Done You return to the Frame Relay Service List window You return to the Configuration Manager window 308624 14 10 Rev 01 5 43
143. ircuit SVC This chapter includes the following topics Topic Page Starting Configuration Tools 2 1 Preparing a Configuration File 2 2 Starting Frame Relay 22 Configuring PVCs and SVCs 2 4 Starting Configuration Tools Before configuring frame relay services see the appropriate user guide for instructions on how to use the Nortel Networks configuration tool of your choice Configuration Tool User Guide Bay Command Console BCC Using the Bay Command Console Site Manager Configuring and Managing Routers with Site Manager These guides also describe generally how to create and modify a configuration 308624 14 10 Rev 01 2 1 Configuring Frame Relay Services Preparing a Configuration File To prepare a configuration file 1 Create and save a configuration file that has at least one WAN interface 2 Open the configuration file in local remote or dynamic mode For information on these procedures see Quick Starting Routers Starting Frame Relay You can use either the BCC or Site Manager to start frame relay using default values for all parameters Frame relay automatically learns the necessary PVC information from the frame relay switch and places the PVCs into the default service Using the BCC To enable frame relay 1 Configure a physical interface on an available slot connector To configure a physical interface on a slot and connector n
144. isting or to new service records To move PVCs complete the following tasks Site Manager Procedure You do this System responds 1 In the Configuration Manager window click on a port configured for frame relay The Edit Connector window opens Click on Edit Circuit The Frame Relay Circuit Definition window opens Click on Services The Frame Relay Service List window opens Click on PVCs The FR PVC List for Service window opens Select the PVC entry listed by its DLCI number you want to move and click on Move The Frame Relay PVC Move window opens Click on OK The FR Service Record Selection window opens Click on the target service record and click on Select The FR Service Record Selection window closes revealing the change in the FR PVC List for Service window Click on Done until you return to the Configuration Manager window 308624 14 10 Rev 01 Configuring Frame Relay Services Enabling Multicast The multicast feature sets up a separate DLCI that replicates broadcast packets and forwards them to the appropriate destinations You can enable support for the frame relay multicast service only if your frame relay provider offers multicasting You can use either the BCC or Site Manager to enable multicast service Using the BCC To enable multicast service you must set the mutlicast control parameter for both the interface and the P
145. ives in a given time period before it stops transmitting frames While frames are going across the network the frame relay interface checks received packets for FECN and BECN bits set to 1 If the interface receives the specified number of bits during the designated time period frame relay drops all traffic destined for the PVC where there is congestion When the interface no longer receives these congestion notifications the router resumes transmission 1 22 308624 14 10 Rev 01 Frame Relay Overview For example suppose you set the congestion timer to 0 5 second and the congestion count to 3 In this case if an interface receives three FECNs or BECNs within 0 5 second the node stops sending frames although it continues to receive frames for this PVC If the interface receives no FECNs or BECNs during the next 0 5 second the router resumes transmission If you enable congestion control and also enable traffic shaping you can throttle which means queue congested traffic rather than lose it Throttle is one of the options for the congestion method For instructions on configuring the congestion parameters see Controlling Congestion for PVCs on page 4 15 and Controlling Congestion for SVCs on page 5 26 Traffic Shaping Traffic shaping relieves bottlenecks in topologies with high speed connections to the central site and low speed connections at remote sites Figure 1 8 on page 1 20 Committed information rate enf
146. k connection If you accept the default values for both Error Threshold and Monitored Events three status exchange errors in a sequence of four attempted exchanges will bring the connection down With Error Threshold set to 5 and Monitored Events set to 10 five status exchange errors in a continuous sequence of 10 attempted exchanges will bring the connection down After the network clears the connection status exchanges continue and the router monitors line integrity When the number of consecutive successful status exchanges is equal to the Error Threshold value the router restores the frame relay connection Error Threshold and Monitored Events are nonfunctional if you set Mgmnt Type to DLCMI None Enter the number of faulty status exchanges that will bring the connection down 1 3 6 1 4 1 18 3 5 9 9 1 1 12 Monitored Events Configuration Manager gt Protocols gt Frame Relay gt Interfaces 4 0 to 2147483647 events Together with the value of the Error Threshold parameter establishes a criterion to evaluate the quality of the router frame relay network connection See the description of the Error Threshold parameter for more information Enter the number of consecutive status exchanges you want the router to monitor 1 3 6 1 4 1 18 3 5 9 9 1 1 13 A 8 308624 14 10 Rev 01 Parameter Path Default Options Function Instructions MIB Object ID Parameter Path Default Options Function Instructi
147. l 7e980E e g Table B 1 RIP Parameters continued IP or IPX RIP Frame Relay Frame Relay IP or IPX SVC Broadcast SVC Inactivity Inactivity Timer Inactivity Timer RIP Enable Enable Timer Mode RIP Timer RIP Timer Functionality Functionality Enabled Disabled Both Directions Inactivity lt RIP When the RIP timer expires If no non RIP packets are e RIP packets will be sent transmitted and no packets are over connected SVCs received within the inactivity e Any SVCs configured as _ timer interval the SVC adjacent hosts that are not disconnects connected will remain disconnected SVCs will not connect and will not send RIP packets Disabled Enabled or Both Directions RIP timer not Not applicable RIP is If no packets are transmitted Disabled applicable RIP disabled and no packets are received is disabled within the inactivity timer interval the SVC disconnects Enabled Enabled Either Direction Inactivity gt RIP When the RIP timer expires RIP packets will refresh the e RIP packets will be sent transmit inactivity timer If no over connected SVCs packets are received within the e Any SVCs configured as __ inactivity timer interval the adjacent hosts that are not SVC disconnects connected will connect to send RIP packets Enabled Disabled Either Direction Inactivity gt RIP When the RIP timer expires RIP packets will refresh the e RIP packets will be sent transmit inactivity timer If no ov
148. led by default If you want to modify the behavior of the XOFF bit you can disable XOFF control To set the XOFF control navigate to the dlcmi prompt for example box serial 1 2 frame relay 1 2 dicmi and enter xoff control lt value gt value can be enabled for the router to observe the XOFF bit disabled for the router to ignore the XOFF bit For example the following command line disables XOFF control dlicmi 1 2 xoff control disabled dlcmi 1 2 3 4 308624 14 10 Rev 01 Customizing Frame Relay Interfaces Selecting Address Type and Length You can specify the data link connection identifier DLCI address type and length that the router and the frame relay network use to direct packets to their destinations The address type for the router and for the switch must be the same Selecting a DLCI Address Type The options for the DLCI address type are ADDR Q922 selects addressing as specified in the final version of the Q 922 standard Q 922 provides for FECN BECN DE and EA bits While most Q 922 addresses are included within a 2 octet field the standard allows for 3 and 4 octet address fields This is the default The November draft of ADDR Q922 differs from ADDR Q922 in dropping the D C bit from the extended 3 and 4 byte forms The D C bit DLCI or DL Core Control Indication is always 0 The March draft of ADDR Q922 differs from ADDR Q922 in defining an 11 bit DLCI and dropping the DE bit from the se
149. ls menu opens 2 Choose Frame Relay The Frame Relay menu opens 3 Choose Interfaces 4 Click on the LAPF button The Frame Relay Interface List window opens The Frame Relay LAPF Parameters window opens Enable Configuration Manager gt Protocols gt Interfaces gt LAPF Enable Enable Disable Enables or disables LAPF on this interface To disable LAPF on this interface set to Disable Otherwise accept the default Enable 1 3 6 1 4 1 18 3 5 9 9 7 1 2 Station Type Configuration Manager gt Protocols gt Interfaces gt LAPF User Side Network Side User Side equipment Identifies the desired station type of this interface Network Side indicates that LAPF will act as the data communications User Side indicates that LAPF will act as the data terminal equipment To have LAPF act as the DTE accept the default User Side To have LAPF act as the DCE set to Network Side 1 3 6 1 4 1 18 3 5 9 9 7 1 6 308624 14 10 Rev 01 Configuring Frame Relay Services Parameter Path Default Options Function Instructions MIB Object ID Action Initiate Configuration Manager gt Protocols gt Interfaces gt LAPF Active Active Passive Identifies the action LAPF will take to initiate link setup by sending or holding unnumbered command SABME frames to poll the router at the other end of the connection Active indicates that LAPF will send SABME frames an
150. mand line sets a timer of 30 tenths of a second 3 seconds lapf 3 2 retransmission timer 30 lapf 3 2 308624 14 10 Rev 01 5 13 Configuring Frame Relay Services Idle Timer The idle timer indicates the amount of time that the router allows with no data being transmitted In the event of a timeout the router initiates a frame handshake to check if the connection is still up To set the idle timer navigate to the lapf prompt for example box serial 1 2 frame relay 1 2 lapf 3 2 and enter idle timer lt integer gt integer is the length of time that the router allows with no data being transmitted The value can be from 1 to 120 seconds The default is 30 For example the following command line sets a timer of 18 seconds lap 3 2 idle timer 18 lapf 3 2 Retransmission Limit The retransmission limit is the maximum number of LAPF retransmissions that can occur after the retransmission timer expires The connection terminates if the router reaches the retransmission limit To set the retransmission limit navigate to the lapf prompt for example box serial 1 2 frame relay 1 2 lapf 3 2 and enter retransmission limit lt integer gt integer is the number of times that the router retransmits after the retransmission timer expires The value can be from 1 to 20 The default is 3 For example the following command line sets a retransmission limit of 8 tries lapf 3 2 retransmission limit 8 lapf 3 2
151. match what the network requests specify a new value in the range of 5 to 30 seconds Note The polling interval does not function if you set the management type to DLCMI None Full Enquiry Interval The full enquiry interval specifies the interval between full status inquiry messages that the router transmits Full status inquiry messages cause the network to send a full status report message which lists all PVCs and their status active or inactive and new or previously established The default full enquiry interval value 6 tells the router to send a full status inquiry every 6 polling intervals For example with a polling interval of 10 and a full enquiry interval of 6 the router transmits a full status inquiry every 60 seconds With a polling interval of 20 and a full enquiry interval of 30 the router transmits a full status inquiry every 10 minutes 600 seconds Note The full enquiry interval does not function if you set the management type to DLCMI None Error Threshold and Monitored Events Error threshold and monitored events together establish a criterion to evaluate the quality of the router s frame relay network connection The error threshold is the number of faulty status messages that cause the router to terminate the connection Monitored events is the number of status message exchanges within which those faulty status messages occur 3 8 308624 14 10 Rev 01 Customizing Frame Relay Interfaces
152. me Relay Circuit Definition window opens Click on Services The Frame Relay Service List window opens 4 Click on PVCs The FR PVC List for Service window opens 5 Click on Add The Frame Relay PVC Add window opens continued 4 6 308624 14 10 Rev 01 Customizing PVCs Site Manager Procedure continued You do this System responds 6 Set the DLCI Number parameter If you want to add more than one PVC enter a range of numbers in the format lt lowest_DLCI_numbers gt lt highest_DLCI_number gt Click on Help or see the parameter description on page A 25 7 Click on OK You return to the FR PVC List for Service window This window now lists the PVCs you have just created 8 Click on Done until you return to the Configuration Manager window Deleting PVCs from Service Records You can delete PVCs from existing service records After you delete a PVC it may reappear on the list of active PVCs if the switch provider does not delete it As soon as the switch provider removes the PVC frame relay dynamically deletes the PVC from the list If the switch provider deletes a PVC that you manually configured the circuit state is set to invalid and the PVC remains unused until you delete it from the interface You can use either the BCC or Site Manager to delete PVCs from service records Using the BCC To delete PVCs navigate to the prompt for the service re
153. me Relay Overview To use data compression with frame relay ensure that compression control is enabled the default and select WCP as one of the protocols for the interface For more information about enabling compression see Disabling and Reenabling Data Compression for PVCs on page 4 26 For more information about data compression see Configuring Data Compression Services Data Encryption Nortel Networks data encryption services enable you to protect sensitive traffic on your network Encryption for frame relay circuits works with direct mode PVCs only For information about and instructions for configuring data encryption see Configuring Data Encryption Services Protocol Prioritization You can set priorities for the traffic sent across a synchronous line interface using protocol prioritization also called priority queueing The ability to prioritize traffic is important for an application that is time sensitive and that requires a fast response For example a user at router A participating in a Telnet session with router B requires a more immediate response than does a user at router A performing a file transfer with router B When you select frame relay on a circuit the router enables protocol prioritization automatically It does so because the DLCMI packets must have a higher priority than any other packets you are sending across the network Enabling frame relay multiline affects protocol prioritization For more i
154. me Relay Service List window 12 Click on Done You return to the Configuration Manager window Modifying LAPF Parameters for SVCs Frame relay LAPF link access procedure frame mode services support the reliable transfer of multiple numbered frames over SVCs You can use either the BCC or Site Manager to customize LAPF Using the BCC You can edit the following LAPF features in the BCC as described in this section e State e Station type e Initiation mode e Retransmission timer e Idle timer e Retransmission limit e Information limit e Window size 308624 14 10 Rev 01 Configuring Frame Relay Services State You can enable or disable LAPF using the state parameter To change the LAPF state navigate to the lapf prompt for example box serial 1 2 frame relay 1 2 lapf 3 2 and enter state lt value gt value can be enabled or disabled The default is enabled For example the following command line disables LAPF lapf 3 2 state disabled lapf 3 2 Station Type The station type determines whether the interface acts as the DCE or DTE To change the station type navigate to the lapf prompt for example box serial 1 2 frame relay 1 2 lapf 3 2 and enter station type lt type gt type can be dce dte network side LAPF communicates as a DCE user side LAPF communicates as a DTE The default is DTE The DCE and DTE options are the same as network side and u
155. me relay protocol for both PVCs and SVCs and supports the reliable transfer of multiple numbered frames over SVCs e The DLCMI layer defines link management protocol for PVCs e The LAPF and Q 933 layers define link management protocol for SVCs Q 933 or FR 4 Define link management protocol for SVCs L LAPF LAPF Core Physical media DLCMI Defines link management protocol for PVCs Defines basic frame relay protocol common to PVCs and SVCs FROO18A Figure 1 5 Frame Relay Signaling and LAPF Standards The link access procedure frame mode LAPF layer defines five unnumbered control frames and three numbered supervisory frames on the communications link 308624 14 10 Rev 01 Frame Relay Overview LAPF defines the following categories of management frames to support reliable transfer of multiple numbered frames over SVCs Unnumbered control Provides connection and disconnection services and includes set asynchronous balanced mode extended SABMEB disconnect DISC frame reject FRMR disconnected mode DM and unnumbered acknowledgment UA frames Numbered supervisory Provides flow control and retransmission information and includes receiver not ready RNR receiver reader RR and reject REJ frames Numbered information I A numbered command response that passes data across the link using a sliding window protocol The frames are numbered sequentially and carry an acknowledg
156. ment of the highest numbered frame received by the sending peer The maximum number of frames outstanding is configurable These frames can only be sent after setup of multiple frame communications on the link A flag within the frame differentiates a command from its response Exchange identification XID An unnumbered command response used to allow peers to exchange identification information LAPF Operational States LAPF has three main operational states TEI assigned The terminal endpoint identifier TEI assigned state is the base interface state When the LAPF circuit is first established this is its state No timers are running and only unnumbered frames are supported across the link Active This state indicates that multiple frame support is up and running on the interface Numbered information frames can travel across the link Timer recovery This state indicates that a timer has expired and the peer is attempting to recover either through retransmission T200 timeout or by initiating an idle time handshake T203 timeout Once multiple frame support is operating on the channel numbered information frames are exchanged to transfer data and acknowledge earlier transfers 308624 14 10 Rev 01 Configuring Frame Relay Services LAPF Timeout and Retransmission Timers Table 1 2 lists the timers and retransmission limits defined in the LAPF protocol for timeouts and retransmissions Table 1 2 LAPF Time
157. ming to local router Outgoing Outgoing from local router Incoming For throughput an SVC may process less throughput than it requests because the local router the frame relay network and the remote end of the connection negotiate quality of service You can use the LL core minimum outgoing and minimum incoming throughput values to set the lowest throughput value the router will accept If either the local router the network or the remote end cannot guarantee that value the SVC will not be established To customize incoming and outgoing data flow and throughput see Customizing Traffic Shaping Quality of Service on page 5 35 Traffic Shaping Configuration Notes for PVCs and SVCs Traffic shaping is best used at central offices to prevent the big pipe from sending too much data too quickly to remote sites with little pipes This concept should guide your decisions about how to configure traffic shaping CIR Configuration Guidelines Consider the following when you configure traffic shaping e In general the value you assign to the B should equal 1 4 of the CIR to avoid excessive queuing and dropped packets If however you are sending frames that exceed the size of the B data travels slowly because the router must use multiple time periods to accommodate the packet size and avoid exceeding the CIR If setting the B to 1 4 of the CIR yields a value lower than packet size set the B to 1 3 or even 1 2 o
158. mote Party Number Remote Party Sub Address Remote Party Number Plan Remote Party Type of Number 6 Set the following parameters Congestion Disable Congestion Timer Congestion Counter Congestion Method applies only when you enable traffic shaping Click on Help or see the parameter descriptions beginning on page A 53 7 Click on Apply 8 Click on Done You return to the Frame Relay Service List window Click on Done You return to the Configuration Manager window 5 32 308624 14 10 Rev 01 Customizing SVCs Using Traffic Shaping with SVCs To use traffic shaping first you enable it You can then customize the traffic shaping quality of service by setting the LL Core parameters specific to committed burst excess burst CIR throughput To enhance the effectiveness of traffic shaping you may also want to edit values for the SVC congestion control and congestion method For more information about traffic shaping see Traffic Shaping Configuration Notes for PVCs and SVCs on page 1 29 Enabling Traffic Shaping You can enable traffic shaping using the BCC or Site Manager Using the BCC To enable traffic shaping for SVCs you set the traffic shaping control parameter to enabled but you also have these options e If you do not want to use traffic shaping on this SVC accept the default disabled and do not set the CIR committed burst and excess burst pa
159. mpression ratio you want to achieve Ifyou set the B equal to the B the router doubles the amount of traffic it attempts to send and when you enable compression compresses that amount of traffic because WCP compresses data at the rate it receives it If you also choose throttle as the congestion method the router will queue traffic if congestion occurs and thus prevent exceeding the CIR Congestion may occur if compression histories are not in sync and WCP has to resend packets If WCP retransmits many packets it may exceed the CIR Traffic shaping increases reliability controls congestion and prioritizes traffic 1 30 308624 14 10 Rev 01 Frame Relay Overview You can use traffic shaping at one or both ends of a link but you must use compression at both ends of a link It makes sense to use traffic shaping at a central site where you have a T1 line that sends data to remote sites with 64 KB line rates and the goal is to control the flow of traffic and avoid flooding the remote sites However if the CIR is equal to the line rate which could well be the case at the remote site with 64 KB line rates there is no need to use traffic shaping Compression and traffic shaping together maximize reliability but at the expense of throughput Traffic shaping occurs at the VC level compression at the driver level Shaping therefore occurs before compression which compromises effective compression because onl
160. mputer Software clause at DFARS 252 227 7013 Notwithstanding any other license agreement that may pertain to or accompany the delivery of this computer software the rights of the United States Government regarding its use reproduction and disclosure are as set forth in the Commercial Computer Software Restricted Rights clause at FAR 52 227 19 Statement of Conditions In the interest of improving internal design operational function and or reliability Nortel Networks NA Inc reserves the right to make changes to the products described in this document without notice Nortel Networks NA Inc does not assume any liability that may occur due to the use or application of the product s or circuit layout s described herein Portions of the code in this software product may be Copyright 1988 Regents of the University of California All rights reserved Redistribution and use in source and binary forms of such portions are permitted provided that the above copyright notice and this paragraph are duplicated in all such forms and that any documentation advertising materials and other materials related to such distribution and use acknowledge that such portions of the software were developed by the University of California Berkeley The name of the University may not be used to endorse or promote products derived from such portions of the software without specific prior written permission SUCH PORTIONS OF THE SOFTWARE ARE PROVIDED AS IS
161. n address pair always uses the same path The router determines whether to route or bridge the packet and then uses the corresponding level of address It uses routing level addresses for routing traffic and the MAC level addresses for bridging traffic Address based distribution ensures that all outbound traffic travels on the same path and that packets arrive in sequence For protocols that cannot receive packets out of sequence use this method Note however that this option does not always distribute traffic evenly across each line Protocol Prioritization and Multiline Incompatibility You cannot use protocol prioritization with multiline Protocol prioritization may change the order of frames arriving over a multiline interface and frame relay multiline does not have the ability to correct the sequence PVC Pass Through The PVC pass through service allows a single frame relay network access link to carry both conventional network protocol traffic and otherwise unroutable frame relay access device FRAD traffic This service works with hybrid mode PVCs only PVC pass through connects two PVCs on separate interfaces so that the router can transmit traffic it receives on one PVC out the other with no encapsulation requirements Figure 1 13 illustrates how PVC pass through works 308624 14 10 Rev 01 1 37 Configuring Frame Relay Services E E DCEs Router E N
162. n one of the WAN ports for example a COM port The WAN Protocols window opens Choose Frame Relay and click on OK The Select Protocols window opens 3 Select the LAN protocols that you want to operate on the frame relay circuit then click on OK Site Manager might prompt you for protocol configuration information For instructions see the appropriate configuration guides for those protocols that you want to run on this interface You have enabled frame relay You can now configure PVCs and SVCs as described in Configuring PVCs and SVCs on page 2 4 Protocol prioritization is enabled automatically when you enable frame relay For information about protocol prioritization see Configuring Traffic Filters and Protocol Prioritization 308624 14 10 Rev 01 Configuring Frame Relay Services Configuring PVCs and SVCs You configure permanent virtual circuits PVCs and switched virtual circuits SVCs after you enable frame relay Configuring a PVC You can configure PVCs using either the default service record or by adding a service record Use these instructions to configure PVCs on the default service record To configure PVCs on service records that you add see Adding PVCs to Service Records on page 4 5 Using the BCC To add a PVC to the default service record complete the following tasks 1 Navigate to the frame relay prompt For example box serial 3 1 frame relay 1
163. n traffic shaping is enabled Throttle Then Shutdown first queues traffic when congestion occurs and then terminates the VC if throttling does not alleviate congestion This option is valid only when traffic shaping is enabled Choose a setting appropriate to your network 1 3 6 1 4 1 18 3 5 9 9 2 1 33 Compression Control Configuration Manager gt Protocols gt Frame Relay gt Services gt PVCs Enable Enable Disable Enables or disables data compression for this service record To use data compression for this service record accept the default Enable Otherwise select Disable 1 3 6 1 4 1 18 3 5 9 9 2 1 29 308624 14 10 Rev 01 A 31 Configuring Frame Relay Services Multiline Algorithm Parameter For each multiline configuration you specify the multiline algorithm it should use The Services Multilined With window Figure A 8 contains the Multiline Algorithm to Choose Line parameter Done FR Slot 4 COM3 Cct 7 Default FR Slot 3 T1 1 Cct 7 Default Add Remove Apply Values Help jad oo a a Multi line Algorithm To Choose Line RANDOM ie Figure A 8 Services Multilined With Window To access the Services Multilined With window complete the following tasks Site Manager Procedure You do this System responds 1 In the Configuration Manager choose Protocols The Protocols menu opens 2 Choose Frame Relay The Frame Relay menu opens 3 Click on Ser
164. nd SVC Comparison Table 1 1 lists the protocols and features that PVCs and SVCs support Table 1 1 PVC and SVC Protocol and Feature Support Protocol Feature PVCs Support SVCs Support IP IPX v y AppleTalk v APPN Bridging DECnet DLSw OSI VINES XNS Data compression WCP Data encryption WEP Protocol prioritization Dial on demand Dial backup Congestion control Traffic shaping PVC pass through SISISISISINISINIS SISISINSIS Multiline 1 4 308624 14 10 Rev 01 Frame Relay Overview Frame Relay Packets Figure 1 2 illustrates the structure of a frame relay packet The packet s header field includes the following Data link connection identifier DLCI The DLCI is the virtual circuit identification number The frame relay network uses the DLCI to direct basic data flow You configure the DLCI for PVCs For SVCs the frame relay switch assigns the DLCI number on a per call basis Command response bit C R ITU T formerly CCITT standards do not use this bit Forward explicit congestion notification FECN and backward explicit congestion notification BECN The FECN and BECN indicate congestion on the network For information about how the frame relay software uses these bits see Congestion Control on page 1 22 Discard eligibility DE The DE bit allows the router to mark specific frames as low priority discard eligible before transmitt
165. nformation see Protocol Prioritization and Multiline Incompatibility on page 1 37 For information about configuring protocol prioritization see Configuring Traffic Filters and Protocol Prioritization 308624 14 10 Rev 01 1 21 Configuring Frame Relay Services Congestion Control Network congestion can degrade network performance Congestion occurs when a node receives more frames than it can process or sends more frames than the transmission line can handle The frame relay network informs the nodes of congestion so that they can reduce the amount of traffic across the network In the frame relay packet header there are two bits that the network sets to alert nodes of network congestion These bits as defined by the frame relay specification are the forward explicit congestion notation FECN bit and the backward explicit congestion notation BECN bit If the network detects congestion it alerts the router in the same direction as the received frame by changing the frame s FECN bit from 0 to 1 For nodes in the opposite direction of the received frame it changes the frame s BECN bit from 0 to 1 Figure 1 9 Congestion direction Frame relay network node Frame relay Frame relay network network node node FROOLOA Figure 1 9 Detecting and Controlling Network Congestion If you enable congestion control you can specify the number of FECN BECN bits the router rece
166. ng on your network requirements you may want to change these values The following sections describe how to customize frame relay for your network Topic Page Configuring Interfaces Using the BCC or Site Manager 3 1 Selecting a Management Type 2 Setting XOFF Control 3 4 Selecting Address Type and Length 3 5 Monitoring the Connection zi Deleting Frame Relay 3 12 Configuring Interfaces Using the BCC or Site Manager Table 3 1 lists the frame relay configuration tasks described in this chapter and indicates whether you can use the BCC or Site Manager to perform each task Table 3 1 Interface Configuration Tasks Task BCC Site Manager Selecting a Management Type v v Setting XOFF Control J Selecting Address Type and Length v v Monitoring the Connection J v Deleting Frame Relay v 308624 14 10 Rev 01 3 1 Configuring Frame Relay Services Selecting a Management Type You can specify the management protocol that the router and the frame relay network use to communicate status information Routers connected back to back also use a management protocol to exchange status information The following list describes your options e DLCMI None provides no management interface between the router and the frame relay network In the absence of management support you must configure all PVCs manually e Rev I LMI provides user side management service
167. not be recovered by resending an information frame Reject REJ requests retransmission of information frames Receive not ready RNR indicates that the station is temporarily busy and not ready to receive information frames continued 308624 14 10 Rev 01 Configuring Frame Relay Services RR XID Receive ready RR indicates that the station is ready to receive information frames Exchange ID indicates the station s identification information show frame relay stats shaping Displays high queue normal queue low queue and summary traffic shaping statistics for frame relay VCs The show frame relay stats shaping command supports the following subcommand options high normal low sum In addition you can specify the following command filters and filter arguments with the subcommand options dici lt dlci gt interface lt name gt service lt name gt Displays only VCs with the specified DLCI Displays only VCs configured on the specified interface Displays only VCs on the specified service The syntax and information for the shaping subcommand options is as follows show frame relay stats shaping high show frame relay stats shaping low show frame relay stats shaping normal show frame relay stats shaping sum Displays high queue outbound traffic shaping statistics for frame relay VCs Displays low queue outbound traffic shaping statistics for frame rel
168. ns describe how to screen and block incoming calls SVC Call Block Direction The sve call block direction parameter enables you to block certain types of calls on the SVC To set the SVC call block direction navigate to the prompt for the service record you want to modify for example box serial 1 2 frame relay 1 2 service 8 0 32 and enter svc call block direction lt va lue gt value can be none inbound outbound all The default is none 308624 14 10 Rev 01 5 5 Configuring Frame Relay Services For example the following command line blocks outbound calls on the SVC service 8 0 32 svce call block direction outbound service 8 0 32 SVC Screening The svc screen control parameter lets you screen incoming calls on this service record To set SVC screen control navigate to the prompt for the service record you want to modify for example box serial 1 2 frame relay 1 2 service 8 0 32 and enter svc screen control lt va ue gt value can be enabled or disabled The default is disabled For example the following command line enables call screening service 8 0 32 svc screen control enabled service 8 0 32 SVC Screen Usage The svc screen usage parameter enables you to allow or disallow calls from numbers in associated SVC option records The default is include to allow calls To set SVC screen usage navigate to the prompt for the service record you want to modify for example box serial 1
169. number accept the default International Otherwise choose Unknown 1 3 6 1 4 1 18 3 5 9 9 10 1 10 308624 14 10 Rev 01 A 43 Configuring Frame Relay Services SVC Options List for Service Parameters When you have finished editing the options parameters you can return to the FR SVC Options List for Service window Figure A 12 to edit the remaining options parameters Done Add Delete Apply Values Help Options Name SYC Control Remote Party Number Remote Party Sub Address Remote Party Number Plan Remote Party Type of Number Figure A 12 FR SVC Options List for Service Window A 44 308624 14 10 Rev 01 Site Manager Parameters To access the FR SVC Options List for Service window complete the following tasks Site Manager Procedure You do this System responds 1 Click on the Protocols menu in the Configuration Manager menu bar The Protocols menu opens 2 Click on Frame Relay The Frame Relay menu opens 3 Click on Services The Frame Relay Service List window opens 4 Click on SVCs The FR SVC Options List for Service window opens Parameter SVC Control Path Configuration Manager gt Protocols gt Frame Relay gt Services gt SVCs Default Enable Options Enable Disable Function Enables or disables the SVC options record for this interface Instructions To disable the SVC options record select Disable Otherwise accept the MIB Obj
170. o points on a network without the requirement that the provider preconfigure virtual circuits VCs SVCs can provide an alternative to a large network infrastructure potentially resulting in cost savings for networks with infrequent communications between sites SVCs can also provide an easy and relatively inexpensive solution for disaster recovery Costs associated with having a redundant PVC are eliminated In addition you can prepare an SVC network for disaster recovery by performing incremental backups to a mirror image database on a remote server In addition to cost savings SVCs provide other benefits When frame relay networks using global addressing approach a thousand sites they run out of data link connection identifiers DLCIs SVCs enable you to manage connectivity on the basis of use rather than permanent connections Using SVCs also simplifies network administration because you do not have to preconfigure network topologies and support moves adds and changes as with PVCs This can be a significant benefit in large highly meshed networks 308624 14 10 Rev 01 1 3 Configuring Frame Relay Services SVCs provide true bandwidth on demand service that can be customized based on the application in use For example a short interactive session might use an SVC with a low or zero committed information rate CIR or throughput rate while a large file transfer of time critical data might require an SVC at a high CIR value PVC a
171. o report error conditions Number of unnumbered acknowledgment frames UAs sent over SVCs to a subscriber or router Message sent by the user or network to solicit a status message 308624 14 10 Rev 01 C 15 Configuring Frame Relay Services show frame relay stats vcs Displays inbound and outbound statistics for frame relay VCs This command allows for the following command filters and filter arguments dici lt dlci gt interface lt name gt service lt name gt type pvc dynamic pvec svc Displays only VCs with the specified DLCI Displays only VCs configured on the specified interface Displays only VCs on the specified service Displays information about only the type of VC configured pvc shows only statically configured PVCs dynamic pvc shows only dynamically learned PVCs svc shows only SVCs The output contains the following information Interface DLCI Inbound Frames Inbound Drops Outbound Frames Outbound Discard FECN BECN Interface on which the frame relay VC resides PVC identification number that the frame relay network uses to direct data Total number of frames that the interface received Total number of outbound frames dropped because the VC is inactive Total number of frames that the router sent out on this interface Total number of frames dropped because the VC is inactive Number of outbound forward explicit congestion no
172. of service you set values for committed burst excess burst and CIR throughput Committed Burst The committed burst rate B defines the number of bits the router can transmit over a specified time interval when congestion occurs For SVCs you configure two parameters to define committed burst committed burst in and committed burst out Respectively these are the maximum number of bits that a VC can receive and transmit during the VC s burst period when congestion is occurring To enable traffic shaping these parameters and the CIR must be greater than zero The values for the committed burst should be lower than the CIR 308624 14 10 Rev 01 5 35 Configuring Frame Relay Services To change the value for committed burst in or committed burst out navigate to the prompt for the SVC you want to modify for example box serial 3 2 frame relay 3 2 service 8 0 32 svc options toronto and enter committed burst in lt integer gt or committed burst out lt integer gt integer is the number of bits the router can transmit per time interval The value can be from 0 to 2 147 483 647 bits The default is 0 For example the following command line sets a committed burst in value of 4 000 bits svc option toronto committed burst in 4000 svc option toronto Excess Burst For SVCs you configure two parameters to define excess burst excess burst in and excess burst out The values for excess burst in combined with committed
173. ommand e You can disable SVC traffic shaping and provide values for the LL Core committed burst excess burst and throughput If you configure traffic shaping this way the router does not enforce the CIR it requests from the frame relay network There is a risk of oversubscribing the interface which may cause packets to be dropped Refining Quality of Service You can refine quality of service requirements for SVCs This means that you can modify traffic shaping parameters for the incoming and outgoing data flow and the minimum acceptable throughput The values you set for these parameters depend on where the SVC call originates If a local router originates the call the LL core outgoing committed burst excess burst and throughput values define characteristics of data the local router transmits while the LL core incoming values define characteristics of data the local router receives If the local router receives a call the outgoing values define characteristics of data the local router receives while incoming values define characteristics of data the local router transmits Table 1 6 shows the direction of data and whether the incoming or outgoing parameters apply 1 28 308624 14 10 Rev 01 Frame Relay Overview Table 1 6 Incoming and Outgoing Call Originator Direction of Data Parameters that Apply Local router Outgoing to remote router Outgoing Incoming from remote router Incoming Remote router Inco
174. onfigurations that use e Both bridging and routing over a single frame relay interface e Spanning tree bridging In a fully meshed network PVCs exist between each pair of nodes in the network In a non fully meshed network PVCs exist only between nodes that need to communicate Figure 1 6 shows a non fully meshed network using hybrid mode Bridge protocol sees two interfaces Frame relay Direction of data to the network network interface gt Routing Bridge protocol protocol Frame relay network oe protocol sees Interface to network one interface to the network FRO007A Figure 1 6 Hybrid Mode Configuration Non Fully Meshed Network 1 16 308624 14 10 Rev 01 Frame Relay Overview Using Hybrid Mode for Transparent Bridging Figure 1 7 shows bridged traffic between site A and site B The bridge router 1 is running on the frame relay interface and its configuration does not use hybrid mode Bridge port sees one 1 path to sites A and B El L Site A Router 1 F m relay network Router 3 eH a Site B FROO08A Figure 1 7 Example of a Bridged Network In this example the bridge receives data from site A If the bridge does not recognize the destination address it tries to dir
175. ons MIB Object ID Site Manager Parameters Multicast Configuration Manager gt Protocols gt Frame Relay gt Interfaces Disable Enable Disable Enables or disables support for frame relay multicast service Set to Enable if your frame relay subscription service provides multicast service and if this frame relay interface should receive multicast messages 1 3 6 1 4 1 18 3 5 9 9 1 1 16 Congestion Control Configuration Manager gt Protocols gt Frame Relay gt Interfaces Disable Enable Disable Enables or disables congestion control on this interface If you set this parameter to Enable the router drops all outbound traffic destined for a congested VC until the congestion clears The value of this parameter affects all VCs that you do not individually configure To activate congestion control set to Enable 1 3 6 1 4 1 18 3 5 9 9 1 1 22 308624 14 10 Rev 01 A 9 Configuring Frame Relay Services Parameter Path Default Options Function Instructions MIB Object ID Parameter Path Default Options Function Instructions MIB Object ID Congestion Timer Configuration Manager gt Protocols gt Frame Relay gt Interfaces 1 0 5 to 5 seconds in 0 5 second intervals Specifies the length of time in seconds during which the router counts congestion notifications If the router receives the number of congestion notifications set by the Congestion Counter parameter the
176. opic to prevent the big pipe from sending traffic that exceeds the PVC CIRs CIR enforcement CIR enforcement means restricting the speed of outbound traffic to a rate no faster than the CIR It is the major component of traffic shaping You can configure CIR enforcement to operate over Synchronous High Speed Serial Interface HSSD T1 E1 and Integrated Services Digital Network ISDN lines for frame relay backup demand bandwidth on demand and leased lines at the virtual circuit level CIR enforcement operates on whole frames only It controls congestion either by bringing down the virtual circuit or by throttling the traffic Committed Burst Rate and Excess Burst Rate The committed burst rate B defines the number of bits that the router can transmit over a specified time interval T when congestion is occurring The excess burst B defines the number of extra bits that the router attempts to send over the T when there is no congestion Both the B and the B are values that you configure The sum of the B and the B is the maximum amount of traffic that can travel across the network per T when there is no congestion If you set the B to a value greater than zero the router can send traffic exceeding the CIR To enforce the CIR that is to limit traffic that the router can send to the amount of the CIR set the B to 0 1 24 308624 14 10 Rev 01 Frame Relay Overview If you enable congestion control and set the
177. orcement and quality of service are the major components of Nortel Networks traffic shaping Committed Information Rate The committed information rate CIR is the rate at which the network supports data transfer under normal operations Its name is descriptive you have a contract with your carrier who has committed to providing a given throughput here called the committed information rate The CIR is measured in bits per second You configure this value that the carrier provides per virtual circuit 308624 14 10 Rev 01 1 23 Configuring Frame Relay Services When configuring the CIR consider the following CIR of 0 You can contract with a carrier for a CIR of 0 which yields best effort service at low cost The carrier transmits data but does not commit to providing a specified throughput To configure a CIR of 0 set both the throughput which is the CIR and the committed burst B to 0 and set the excess burst B to a value greater than 0 For more information about burst rates see the next section Committed Burst Rate and Excess Burst Rate Maximum CIR The maximum CIR should not be greater than the speed of the access line on the slower end of a virtual circuit In a big pipe little pipe topology Figure 1 8 on page 1 20 likely CIRs at the remote sites would be 32 Kb s 56 Kb s or 64 Kb s If you configure CIRs for these virtual circuits at the central site you can use CIR enforcement described in the next t
178. oring Frame Relay Using the BCC show Command show frame relay svcs Displays general information about all frame relay SVCs You can display current operation status and SVC type The show frame relay svcs command supports the following subcommand options calls shaping priority In addition you can specify the following command filters and filter arguments with the subcommand options dici lt dici gt Displays only frame relay SVCs with the specified DLCI interface lt name gt Displays only frame relay SVCs configured on the specified interface service lt name gt Displays only frame relay SVCs on the specified service record show frame relay svcs calls Displays call information for active frame relay SVCs The output contains the following information Interface Interface on which the SVC resides DLCI Name of the SVC associated with this circuit Direction Direction of the call to the router inbound or outbound Calling Number Number the router is calling Called Number Number of the router being called 308624 14 10 Rev 01 C 19 Configuring Frame Relay Services show frame relay svcs priority show frame relay svcs shaping Displays priority information for active frame relay SVCs The output contains the following information Interface DLCI Data Priority Gain Priority Keep Priority Interface on which the SVC resides Name of the SVC associated with this circuit Pri
179. ority of data on the network connection This is a value that the router requests it is not guaranteed Priority of data required to add a connection This is a value that the route requests it is not guaranteed Priority of data required to maintain a connection This is a value the router requests it is not guaranteed Displays shaping information for active SVCs The output contains the following information Interface DLCI CIR Inbound Burst CIR Inbound Burst Committed Inbound Burst Excess Outbound Burst CIR Outbound Burst Committed Outbound Burst Excess Interface on which the SVC resides Name of the SVC associated with this circuit Committed information rate or throughput indicates the number of bits per second a carrier guarantees the router can transmit over a specified time period when there is no congestion Number of requested incoming throughput kbits second when there is no congestion Number of bits that the router can receive over a specified time interval B Number of extra bits the router attempts to receive when there is no congestion Bg Requested outgoing throughput when no congestion is occurring The number of bits that the router can send over a specified time interval B The number of extra bits the router attempts to send when there is no congestion Be C 20 308624 14 10 Rev 01 Monitoring Frame Relay Using the BCC show Command show frame relay vcs
180. ork supports X 213 prioritization you should assign a value You should accept the default if the network does not support X 213 prioritization unless the network is able to accept pieces of signaling information that it does not recognize 1 3 6 1 4 1 18 3 5 9 9 10 1 18 X 213 Keep LQA Priority Configuration Manager gt Protocols gt Frame Relay gt Services gt SVCs 15 Oto 15 Sets the lowest acceptable priority of data required to maintain a connection This is a value below which the router will disconnect the SVC A value of 0 is the lowest priority and 14 is the highest A value of 15 means unspecified If your network supports X 213 prioritization you should assign a value You should accept the default if the network does not support X 213 prioritization unless the network is able to accept pieces of signaling information that it does not recognize 1 3 6 1 4 1 18 3 5 9 9 10 1 19 308624 14 10 Rev 01 A 49 Configuring Frame Relay Services Parameter Path Default Options Function Instructions MIB Object ID Parameter Path Default Options Function Instructions MIB Object ID Parameter Path Default Options Function Instructions MIB Object ID LL Core Out Throughput Configuration Manager gt Protocols gt Frame Relay gt Services gt SVCs 0 0 to 21447463647 b s Specifies the requested outgoing throughput b s when no congestion is occurring To enable traffic sh
181. orlando pve 1 2 51 and enter committed burst lt nteger gt integer is the number of bits the router can transmit per time interval The value can be from 0 to 2 147 483 647 bits The default is 0 For example the following command line sets a committed burst value of 4 000 bits pvc 1 2 51 committed burst 4000 pvc 1 2 51 Excess Burst The excess burst rate Be combines with the committed burst rate to determine the maximum number of bits the router can transmit over a specified time interval when there is no congestion The excess burst plus the committed burst must be less than or equal to the line speed You configure this value for each PVC but not for the interface 308624 14 10 Rev 01 4 23 Configuring Frame Relay Services To change the value for the excess burst navigate to the prompt for the PVC you want to modify for example box serial 1 2 frame relay 1 2 orlando pvc 1 2 51 and enter excess burst lt nteger gt integer is the number of bits the router can transmit per time interval The value can be from 0 to 2 147 483 647 bits The default is 0 For example the following command line sets an excess burst value of 2 000 bits pvc 1 2 51 excess burst 2000 pvc 1 2 51 CIR Throughput The CIR committed information rate or throughput defines the number of bits per second your carrier guarantees the router can transmit over a specified time interval when there is no congestion Your carrier
182. out and Retransmission Timers Site Manager Parameter Description T200 This general purpose retransmission timeout is used during initiation of LAPF multiple frame support and for timeout of numbered information frames T203 This timeout detects excessive idle time on the line and initiates a frame handshake to check if the connection is still up N200 This maximum retransmission count when reached causes the software to take action The action taken by the router software depends on the type of message timed out and the state of the service Timer T200 Timer T200 detects transmission timeouts When a timeout occurs the peer enters the timer recovery state and retransmits the frame up to a maximum of N200 times If this limit is reached the system performs the following operations e Terminates multiple frame operation e Discards all outstanding information frames e Transitions the peer to the TEI assigned state e Initiates multiple frame setup If the remote peer receives a frame that contains an error it sends an REJ message to specify which frame was in error In response the local peer retransmits information frames beginning with the bad frame If the remote peer encounters an error that retransmission cannot remedy it sends an FRMR response to the local peer and transitions to the TEI assigned state The local peer discards all outstanding information frames transitions to the TEI assigned state
183. plays only frame relay interfaces configured on the specified interface The output contains the following information Interface Interface on which the frame relay SVC resides Last Error Type Type of the last error received Last Error Time Time of the last error received Faults Number of faults received Outbound Drops Total number of outbound frames dropped because the SVC is inactive Inbound Discards Total number of inbound frames discarded because they were deemed erroneous C 8 308624 14 10 Rev 01 Monitoring Frame Relay Using the BCC show Command show frame relay stats lapf Displays LAPF receive transmit traffic and error statistics for frame relay interfaces The show frame relay stats lapf command supports the following subcommand options errors traffic receive transmit In addition you can specify the following filter and filter argument with the subcommand options interface lt name gt Displays only frame relay VCs configured on the specified interface show frame relay stats lapf errors Displays LAPF error statistics for frame relay interfaces The output contains the following information Interface Interface on which the VC resides Retransmission Indicates the length of time the router waits to receive an T200 Timeouts acknowledgment from the station Idle T203 Timeouts Indicates the amount of time that the router allows with no data being transmitted
184. prioritization you should assign a value You should accept the default if the network does not support X 213 prioritization unless the network is able to accept pieces of signaling information that it does not recognize 1 3 6 1 4 1 18 3 5 9 9 10 1 16 X 213 Gain LQA Priority Configuration Manager gt Protocols gt Frame Relay gt Services gt SVCs 15 0 to 15 Sets the lowest acceptable priority of data to add a connection This is a value below which the router will not create the SVC A value of 0 is the lowest priority and 14 is the highest A value of 15 means unspecified If your network supports X 213 prioritization you should assign a value You should accept the default if the network does not support X 213 prioritization unless the network is able to accept pieces of signaling information that it does not recognize 1 3 6 1 4 1 18 3 5 9 9 10 1 17 A 48 308624 14 10 Rev 01 Parameter Path Default Options Function Instructions MIB Object ID Parameter Path Default Options Function Instructions MIB Object ID Site Manager Parameters X 213 Keep Priority Configuration Manager gt Protocols gt Frame Relay gt Services gt SVCs 15 0 to 15 Sets the priority of data required to maintain a connection This is a value that the router requests it is not guaranteed A value of 0 is the lowest priority and 14 is the highest A value of 15 means unspecified If your netw
185. ption 1 21 Protocol Prioritization 1 21 Congestion Control 1 22 Traffic Shaping 1 23 continued 308624 14 10 Rev 01 1 1 Configuring Frame Relay Services Topic continued Page Traffic Shaping for SVCs 1 27 Traffic Shaping Configuration Notes for PVCs and SVCs 1 29 X 213 Priority for SVCs 1 33 Inactivity Timing for SVCs 1 33 Multiline for PVCs 1 35 PVC Pass Through 1 37 Frame Relay Dial Services 1 38 Synchronous Line Configuration for Frame Relay 1 38 Calculating the MTU Size for Frame Relay Connections 1 39 Introduction to Frame Relay Frame relay is a high speed packet switching WAN protocol that connects geographically dispersed LANs Frame relay is usually offered by a public network provider however private organizations can acquire and manage their own frame relay networks as well Frame relay is a connection oriented protocol which means that it relies on end to end paths between devices connected across the network It implements these connections using permanent virtual circuits or switched virtual circuits Figure 1 1 illustrates a frame relay network a a Frame relay i network ET e fSwitch gg Switch E Router VC Switch Router J
186. py the Software solely for backup purposes in support of authorized use of the Software and c to use and copy the associated user manual solely in support of authorized use of the Software by Licensee This license applies to the Software only and does not extend to Nortel Networks Agent software or other Nortel Networks software products Nortel Networks Agent software or other Nortel Networks software products are licensed for use under the terms of the applicable Nortel Networks NA Inc Software License Agreement that accompanies such software and upon payment by the end user of the applicable license fees for such software 2 Restrictions on use reservation of rights The Software and user manuals are protected under copyright laws Nortel Networks and or its licensors retain all title and ownership in both the Software and user manuals including any revisions made by Nortel Networks or its licensors The copyright notice must be reproduced and included with any copy of any portion of the Software or user manuals Licensee may not modify translate decompile disassemble use for any competitive analysis reverse engineer distribute or create derivative works from the Software or user manuals or any copy in whole or in part Except as expressly provided in this Agreement Licensee may not copy or transfer the Software or user manuals in whole or in part The Software and user manuals embody Nortel Networks and its licensors confidential and
187. r window You can use either the BCC or Site Manager to delete service records for SVCs Using the BCC To delete service records navigate to the frame relay prompt for example box serial 1 2 frame relay 1 2 and enter delete service lt service_name gt service_name identifies the service record For example the following command line deletes service record 8 0 32 frame relay 1 2 delete service 8 0 32 frame relay 1 2 Using Site Manager To delete service records from a frame relay interface complete the following tasks Site Manager Procedure You do this System responds 1 In the Configuration Manager window choose Protocols The Protocols menu opens 2 Choose Frame Relay The Frame Relay menu opens 3 Choose Services The Frame Relay Service List window opens continued 308624 14 10 Rev 01 Customizing SVCs Site Manager Procedure continued You do this System responds 4 Choose the service record you want to delete 5 Click on Delete A confirmation window opens It asks if you really want to delete the service record 6 Click on OK Site Manager deletes the service record 7 Click on Done You return to the Configuration Manager window Call Screening and Blocking You can use either the BCC or Site Manager to configure call screening and blocking for a service record Using the BCC The following sectio
188. r an Interface esseeeeeeseeeseeseenssrerssrssersns 4 15 Congestion Control ore ere aonni etnies er PE ee 4 16 Congestion TINGE aoinean aiani naa aE ANSA 4 16 Congestion COUOT vueia asena aaa aE EEA SANSA 4 17 Congestion Method ST eT asoida bonka eee heck aati rere 417 Configuring Congestion Control for Individual PVCS 0 cccecseeceeeeeeeeeeeesseeeeeeneees 4 18 SON LION arnasan a a i 4 19 Congestion TIGE sorrido iaacepadsconaavesanheciedice tonsaneasiuaniedacocsadedecsuareuecciueaned 4 19 congas CouUniaE sirimernk i A 4 20 Congestion Method eis TATE TE T eeu ial ee rere 4 20 Using Taie SHADI Renee eaten peeenren eet er een a eae arene err 4 21 Normal High and Low Queue Limits 20 ccc cecccccsseeeecseeceeeeeeeessesesseeeeeseeseseeenes 4 22 Committed Burst scicssevessnreonnn Serre Ea E EATE E E PET 4 23 Eee E AN E A E ain ea A A 4 23 Dr ALE ie T E E A A A AN EET E 4 24 Disabling and Reenabling Data Compression for PVCS c cccecceeeeeteeeeeeeeeeeteeeeeneees 4 26 Grouping Service Records for Multiline Mode cc cceceeceeseeeceeeeeeeaeeeeeeeeeeaeestenes 4 27 Removing Multiline Services ccceee PE P ere eRe 4 28 Chapter 5 Customizing SVCs Adding Service Records TOTS FS wiass deta seed dsennnass sa diiees saa nserataanouiviadietindsanbesieen ideas 5 2 Deleting Service Records Or BG sitecneceantactenata ctedesntvcaaduiatcc ieateetose vee ia 5 4 el Pereic lili and BIERO rrari
189. raffic destined for that SVC until it no longer receives congestion notifications When you enable congestion control you can set the length of time during which the router counts congestion notifications You can also set the maximum number of congestion notifications that the router can receive during this time period If the router receives this number of congestion notifications within the time period you specify it stops transmitting data The router resumes transmission when it stops receiving congestion notifications If you enable congestion control all SVCs on the interface use congestion control and the values you specify for the congestion timer and congestion counter However you can configure SVCs individually at the service level In this case you can either disable congestion for an individual SVC or select other congestion control parameters for that SVC 5 26 308624 14 10 Rev 01 Customizing SVCs Configuring Congestion Control for an Interface You can use either the BCC or Site Manager to control congestion for a frame relay interface Using the BCC To configure congestion control for the interface you must first enable congestion control Then you can optionally configure the congestion timer congestion counter and congestion method Congestion Control Congestion control is disabled by default To enable congestion control navigate to the frame relay prompt for example box serial 1 2 frame rel
190. rameters e To use traffic shaping and accept the quality of service QoS the network provides set this parameter to enabled and do not configure the CIR committed burst and excess burst parameters e To use traffic shaping and negotiate QoS with the network set this parameter to enabled and also set the CIR committed burst and excess burst parameters e To prevent the router from enforcing the CIR set this parameter to disabled and also set the CIR committed burst and excess burst parameters For instructions on customizing the CIR committed burst and excess burst parameters see Customizing Traffic Shaping Quality of Service on page 5 35 308624 14 10 Rev 01 5 33 Configuring Frame Relay Services To set the traffic shaping control parameter navigate to the prompt for the SVC you want to modify for example box serial 3 2 frame relay 3 2 service 8 0 32 svc options toronto and enter traffic shaping control lt value gt value can be enabled or disabled The default is disabled For example the following command line enables traffic shaping on this SVC svc option toronto traffic shaping control enabled svc option toronto Using Site Manager To enable traffic shaping complete the following tasks Site Manager Procedure You do this System responds 1 In the Configuration Manager window choose Protocols The Protocols menu opens Choose Frame Relay The Frame
191. received by the router prevents the expiration of the inactivity timer If the router does not transmit or receive data the inactivity timer expires and disconnects the SVC The default is both For example the following command line sets the inactivity direction to outbound service 8 0 32 svc inactivity direction outbound service 8 0 32 308624 14 10 Rev 01 5 23 Configuring Frame Relay Services Individual SVC Inactivity Values To set the inactivity timer and direction for a particular SVC navigate to the SVC options prompt for example box serial 3 2 frame relay 3 2 service 8 0 32 svc options toronto and enter inactivity timer lt integer gt integer integer is the length of time in seconds before the SVC terminates because no data has traveled over the circuit in the direction specified by the inactivity direction parameter The value can be from 0 to 2147483647 seconds The default is 60 For example the following command line sets the inactivity timer to 90 seconds svc options toronto inactivity timer 90 svc options toronto To configure the inactivity direction enter inactivity direction lt direction gt direction can be both only data transmitted AND received by the router prevents the expiration of the inactivity timer If the router does not transmit and receive data the inactivity timer expires and disconnects the SVC outbound only data transmitted by the router prevents the expir
192. riber or router to solicit a status message 308624 14 10 Rev 01 Monitoring Frame Relay Using the BCC show Command show frame relay stats signalling transmit Displays signalling transmit statistics for frame relay interfaces The output contains the following information Interface Setup Call Proceeding Connect Disconnect Release Release Complete Status Unnumbered Frames Sent Status Enquiry Interface on which the frame relay SVC resides Indicates the number of seconds allowed from the time the router sends a setup message to the called subscriber and receives a connect or call proceeding message from the called subscriber Indicates the number of seconds allowed from the time the router receives a call proceeding message to the time the router receives a connect or disconnect message Message sent by the called user to the network and by the network to the calling user to indicate call acceptance by the called user Indicates the number of seconds allowed from the time the router sends a disconnect message and receives a release message back Indicates the number of seconds allowed for a call clearing initiated by the other end of the connection or when the disconnect timer expires Indicates that the network returns a release complete message to the subscriber in response to a release message sent from the subscriber Message sent by the user or network in response to a status enquiry or t
193. ring Frame Relay Services show frame relay stats signalling receive Displays signalling receive statistics for frame relay interfaces The output contains the following information Interface Setup Call Proceeding Connect Disconnect Release Release Complete Status Unnumbered Frames Sent Status Enquiry Interface on which the SVC resides Indicates the number of seconds allowed from the time the router sends a setup message to the called subscriber and receives a connect or call proceeding message from the called subscriber Message sent by the called subscriber to the router or by the router to the calling subscriber to indicate the establishment of the requested call Message sent by the called subscriber to the router and by the router to the calling subscriber to indicate call acceptance by the called subscriber Message sent by the subscriber to request the router to clear an end to end connection or a message sent by the router to indicate that the end to end connection is cleared Message sent by the user or router to indicate that the sender has disconnected the call Message sent by the subscriber or the router to indicate that the sender has released the call reference Message sent by the subscriber or router in response to a status enquiry or to report error conditions Number of unnumbered acknowledgment frames UAs sent over SVCs to a subscriber or router Message sent by the subsc
194. ription 1 3 moving 1 15 4 9 parameters A 24 Index 4 Q QoS Quality of Service 1 25 customizing for SVCs 1 28 5 35 R random traffic distribution multiline 1 36 release request state for LAPF 1 12 Remote Party Number parameter A 42 Remote Party Number Plan parameter A 43 Remote Party Sub Address parameter A 42 Remote Party Type of Number parameter A 43 retransmission timeouts 1 10 1 11 RFC 1490 1 18 RIP and SVCs 1 34 B 1 S Service Name parameter A 23 A 36 service records adding 4 3 5 2 default service record 1 14 deleting 3 12 4 5 5 4 grouping for multiline 4 27 multiple for an interface 1 15 overview 1 14 parameters for PVCs A 26 parameters for SVCs A 35 show commands BCC C 1 signaling call proceeding processing 1 13 call setup processing 1 11 1 13 connect message processing 1 13 for SVCs 1 11 parameters modifying 5 17 Signalling Control parameter A 18 Site Manager customizing frame relay interfaces 3 1 customizing PVCs 4 1 customizing SVCs 5 1 parameters A 1 starting frame relay 2 3 308624 14 10 Rev 01 source routing using RFC 1490 1 18 starting frame relay 2 1 Station Type parameter A 13 support Nortel Networks xxii SVC Call Block parameter A 38 SVC Control parameter A 45 SVC Inactivity Mode parameter A 40 SVC Inactivity Timer parameter A 39 SVC InScreening Disable parameter A 38 SVC InScreening Usage parameter A 39 SVC Local Party N
195. rity of data on a connection The gain priority parameter sets the priority of data required to add a connection It is a value the router requests it is not guaranteed The gain priority minimum parameter sets the lowest acceptable priority of data to add a connection This is a value below which the router will not create the SVC The keep priority parameter sets the priority of data required to maintain a connection This is a value the router requests it is not guaranteed The keep priority minimum parameter sets the lowest acceptable priority of data required to maintain a connection This is a value below which the router will disconnect the SVC 308624 14 10 Rev 01 5 44 Configuring Frame Relay Services To set X 213 priority values navigate to the prompt for the SVC you want to modify for example box serial 3 2 frame relay 3 2 service 8 0 32 svc options toronto and enter any of the following parameters data priority lt integer gt data priority minimum lt integer gt gain priority lt integer gt gain priority minimum lt integer gt keep priority lt integer gt keep priority minimum lt integer gt integer can be a value from 0 to 15 with 0 as the lowest priority and 14 as the highest A value of 15 means unspecified For example the following command line sets a data priority of 9 for SVC options svc options toronto data priority 9 svc options toronto Using Site Manager To set X 213 pr
196. rks during the warranty period along with proof of the date of shipment This warranty does not apply if the media has been damaged as a result of accident misuse or abuse The Licensee assumes all responsibility for selection of the Software to achieve Licensee s intended results and for the installation use and results obtained from the Software Nortel Networks does not warrant a that the functions contained in the software will meet the Licensee s requirements b that the Software will operate in the hardware or software combinations that the Licensee may select c that the operation of the Software will be uninterrupted or error free or d that all defects in the operation of the Software will be corrected Nortel Networks is not obligated to remedy any Software defect that cannot be reproduced with the latest Software release These warranties do not apply to the Software if it has been i altered except by Nortel Networks or in accordance with its instructions ii used in conjunction with another vendor s product resulting in the defect or iii damaged by improper environment abuse misuse accident or negligence THE FOREGOING WARRANTIES AND LIMITATIONS ARE EXCLUSIVE REMEDIES AND ARE IN LIEU OF ALL OTHER WARRANTIES EXPRESS OR IMPLIED INCLUDING WITHOUT LIMITATION ANY WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE Licensee is responsible for the security of its own data and information and for maintaining adequate p
197. rocedures apart from the Software to reconstruct lost or altered files data or programs 308624 14 10 Rev 01 iii 4 Limitation of liability INNO EVENT WILL NORTEL NETWORKS OR ITS LICENSORS BE LIABLE FOR ANY COST OF SUBSTITUTE PROCUREMENT SPECIAL INDIRECT INCIDENTAL OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES RESULTING FROM INACCURATE OR LOST DATA OR LOSS OF USE OR PROFITS ARISING OUT OF OR IN CONNECTION WITH THE PERFORMANCE OF THE SOFTWARE EVEN IF NORTEL NETWORKS HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES IN NO EVENT SHALL THE LIABILITY OF NORTEL NETWORKS RELATING TO THE SOFTWARE OR THIS AGREEMENT EXCEED THE PRICE PAID TO NORTEL NETWORKS FOR THE SOFTWARE LICENSE 5 Government Licensees This provision applies to all Software and documentation acquired directly or indirectly by or on behalf of the United States Government The Software and documentation are commercial products licensed on the open market at market prices and were developed entirely at private expense and without the use of any U S Government funds The license to the U S Government is granted only with restricted rights and use duplication or disclosure by the U S Government is subject to the restrictions set forth in subparagraph c 1 of the Commercial Computer Software Restricted Rights clause of FAR 52 227 19 and the limitations set out in this license for civilian agencies and subparagraph c 1 ii of the Rights in Technical Data and Computer Software
198. router stops transmitting data The router resumes transmission once it stops receiving congestion notifications Set the length of time the router should count congestion notifications from the network If you set this parameter for a long time period the router may be less likely to stop transmission for an intermittent congestion condition However the router may be slow to detect congestion resulting in long transmission delays once the congestion has cleared The value of this parameter applies to all VCs that you do not individually configure 1 3 6 1 4 1 18 3 5 9 9 1 1 23 Congestion Counter Configuration Manager gt Protocols gt Frame Relay gt Interfaces 20 1 through 500 notifications Indicates the maximum number of congestion notifications that the router can receive during the congestion timer period before it stops transmitting If the router reaches the value set by this parameter it determines the line is congested and stops transmitting Specify the congestion count The smaller the number the more quickly the router detects congestion and stops transmitting The value of this parameter applies to all VCs that you do not individually configure 1 3 6 1 4 1 18 3 5 9 9 1 1 24 308624 14 10 Rev 01 Parameter Path Default Options Function Instructions MIB Object ID Site Manager Parameters Congestion Method Configuration Manager gt Protocols gt Frame Relay gt Interfaces Shutdown Shutdown
199. s 3 Choose Services The Frame Relay Service List window opens Click on Multiline The Services Multilined With window opens Click on Add The Multiline window opens continued 308624 14 10 Rev 01 4 27 Configuring Frame Relay Services Site Manager Procedure continued You do this 6 Choose the frame relay interface you want to configure for multiline and click on Select System responds The Multiline window closes Site Manager moves the frame relay interface from the Multiline window to the Services Multilined With window Set the Multiline Algorithm to Choose Line parameter Click on Help or see the parameter description on page A 34 8 Click on Apply 9 Click on Done You return to the Frame Relay Service List window 10 Click on Done You return to the Configuration Manager window Removing Multiline Services To remove multiline services complete the following tasks Site Manager Procedure You do this 1 In the Configuration Manager window choose Protocols System responds The Protocols menu opens Choose Frame Relay The Frame Relay menu opens 3 Choose Services The Frame Relay Service List window opens 4 Click on Multiline The Services Multilined With window opens 5 Select the frame relay interface you want Site Manager removes the frame relay to remove
200. s None Any display string Specifies the outbound calling party subaddress which is also the inbound called party subaddress Enter the number 1 3 6 1 4 1 18 3 5 9 9 5 1 19 SVC Local Party Number Plan Configuration Manager gt Protocols gt Frame Relay gt Services X 121 E 164 X 121 Specifies whether this SVC uses the E 164 or X 121 number plan for addresses Choose the numbering plan that applies to your network 1 3 6 1 4 1 18 3 5 9 9 5 1 20 308624 14 10 Rev 01 A 37 Configuring Frame Relay Services Parameter Path Default Options Function Instructions MIB Object ID Parameter Path Default Options Function Instructions MIB Object ID Parameter Path Default Options Function Instructions MIB Object ID SVC Local Party Type of Number Configuration Manager gt Protocols gt Frame Relay gt Services International Unknown International Specifies the type of number the local caller uses To allow the caller to use an international type number accept the default International Otherwise choose Unknown 1 3 6 1 4 1 18 3 5 9 9 5 1 21 SVC Call Block Configuration Manager gt Protocols gt Frame Relay gt Services None None Inbound Outbound All Allows you to block certain types of calls on the SVC Choose the type of call blocking you want this SVC to use 1 3 6 1 4 1 18 3 5 9 9 5 1 22 SVC InScreening Disable Configuration Manager gt Protocols
201. s Enable Service Transparent WAN Protocol Frame Relay For more information about these parameters refer to Configuring WAN Line Services Calculating the MTU Size for Frame Relay Connections The maximum transmission unit MTU value is the largest packet size the router will transmit across a connection The MTU is configured as part of the WAN line parameters and its default value for frame relay is 1600 If your Nortel Networks router communicates across a frame relay line you may need to adjust the MTU value because as you add headers to the frame relay packet such as those for compression and encryption the router reduces the space for layer 3 data such as IP or IPX datagrams 308624 14 10 Rev 01 1 39 Configuring Frame Relay Services Table 1 9 Table 1 9 summarizes the changes you may need to make to the MTU value for your frame relay configuration In addition to these adjustments other router subsystems using frame relay such as IP or IPX may also affect the MTU value Those adjustments are based on the particular subsystem configuration MTU Adjustments for Frame Relay Connections Reason for the Adjustment Size of Overhead Lines for which the Packets bytes Adjustment Applies Notes Data compression 3 Synchronous MCT1 The router always subtracts the WCP WCP overhead MCE1 ISDN BRI header regardless of whether WCP is enabled Consequently the amount of data that the router sen
202. s as specified by Revision 1 of the Local Management Interface standard e ANSI T1 617D provides user side management services as specified in Annex D to ANSI standard T1 617 1991 This is the default value e CCITT Annex A provides user side management services as specified by the ITU T formerly CCITT e LMI Switch offers limited management services for the DCE side of the connection as specified by Revision 1 of the Local Management Interface standard e Annex D Switch provides limited management services for the DCE side of the connection as specified in Annex D to ANSI standard T1 617 1991 e Annex A Switch provides limited management services for the DCE side of the connection as specified by the ITU T If you are connecting two routers back to back use one of the DTE parameter options Rev 1 LMI ANSI T1 617D or ITU Annex A for the router acting as a DTE and one of the DCE options LMI Switch Annex D Switch or Annex A Switch for the router acting as the DCE Although you can configure the router for the DCE side of a connection the router cannot act as a full switch and it will not perform complete bidirectional signaling The LMI Switch Annex D Switch and Annex A Switch options are primarily for troubleshooting You can use either the BCC or Site Manager to select a management type 3 2 308624 14 10 Rev 01 Using the BCC Customizing Frame Relay Interfaces To specify a management protocol navigate to th
203. s unspecified If your network supports X 213 prioritization you should assign a value You should accept the default if the network does not support X 213 prioritization unless the network is able to accept pieces of signaling information that it does not recognize 1 3 6 1 4 1 18 3 5 9 9 10 1 14 X 213 Data LQA Priority Configuration Manager gt Protocols gt Frame Relay gt Services gt SVCs 15 0 to 15 Sets the lowest acceptable priority of data on a connection A value of 0 is the lowest priority and 14 is the highest A value of 15 means unspecified If your network supports X 213 prioritization you should assign a value You should accept the default if the network does not support X 213 prioritization unless the network is able to accept pieces of signaling information that it does not recognize 1 3 6 1 4 1 18 3 5 9 9 10 1 15 308624 14 10 Rev 01 A 47 Configuring Frame Relay Services Parameter Path Default Options Function Instructions MIB Object ID Parameter Path Default Options Function Instructions MIB Object ID X 213 Gain Priority Configuration Manager gt Protocols gt Frame Relay gt Services gt SVCs 15 0 to 15 Sets the priority of data required to add a connection This is a value that the router requests it is not guaranteed A value of 0 is the lowest priority and 14 is the highest A value of 15 means unspecified If your network supports X 213
204. secndummececcomnety 1 37 Protocol Prioritization and Multiline Incompatibility 0 00 0 cece eecteeeeeeneeeeeeeaes 1 37 PYG Pass THOUgN ciicecctssesacstocinecteesiols nRa SPT eee Sema mead chu eunan mse O7 Fame Relay Dial SOrVICOS arsina a a Ea 1 38 vi 308624 14 10 Rev 01 Synchronous Line Configuration for Frame Relay ccccceesseeceeeeeeeeeeeeeeeetsteeeteeeee 1 38 Calculating the MTU Size for Frame Relay Connections 0 eee eee eeeeeeeeeeeeeeeeeeeeneees 1 39 Chapter 2 Starting Frame Relay Starting Contiguration Tools scrissceesvorssusuninsiaadennes bonddeieiivaseudoeiy oor caniivieniuieriendiubertebeduins 2 1 Preparing a Configuration File Carer PTT meni PT E E T Sere EEE 2 2 Staring FEME REY mannanna aa 2 2 RUN PYES ANG SYC S surina aeai aE a iia iver SNEDE ia 2 4 PCRS A PYG arisini a a aa tie arh 2 4 OOO AN ansir RAAN 2 6 Configuring Adjacent Hosts for an SVC Service Record rere icone 2 7 Chapter 3 Customizing Frame Relay Interfaces Configuring Interfaces Using the BCC or Site Manager ceeeeeeceeceeteeereeneeeeeneeeaees 3 1 Selecting a Management TPE siccccsasty ccisnnietcevtener renner eaten 3 2 SiG APF eros e Meee ener eer eee Sere peer er ett rere etre rrr terre rer rrr Tce rer rer rrr rer 3 4 Selecting Address Type and Length 0 PEE E ET i epi PS e Sellcing a DLO Address TOE srini aaea araa EE 3 5 Selecting a DLC Address Length sissisodan snaa aa d a DES 3 5 Monitoring the
205. ser side respectively For example the following command line sets station type to DCE lapf 3 2 station type dce lapf 3 2 308624 14 10 Rev 01 Customizing SVCs Initiation Mode Initiation mode determines the action LAPF will take to initiate link setup by sending or holding unnumbered parameter SABME frames to poll the router at the other end of the connection To set the initiation mode navigate to the lapf prompt for example box serial 1 2 frame relay 1 2 lapf 3 2 and enter initiation mode lt mode gt mode can be active the default LAPF will send SABME frames and initiate link setup passive LAPF takes no action to initiate link setup For example the following command line sets a passive initiation mode lapf 3 2 initiation mode passive lapf 3 2 Retransmission Timer The retransmission timer is used during initiation of LAPF multiple frame support and for timeout of LAPF numbered information frames In the event of a timeout the sending platform retransmits the frame up to the maximum number of times you specify for retransmission limit To set the retransmission timer navigate to the lapf prompt for example box serial 1 2 frame relay 1 2 lapf 3 2 and enter retransmission timer lt integer gt integer is the length of time that the router waits to receive an acknowledgment The value can be from 1 to 1200 tenths of a second The default is 15 For example the following com
206. sia C 8 x 308624 14 10 Rev 01 Show frame telay Stas lapi citar scntsarscisiincin decumbent nnn Ue Show rame rtelay stats lapi SIONS soirassa aaa C 9 show frame relay stats lapf receive cececeseeeeeeeeeeeeeeeeeeeeneeceeeeeeaaesteneeneaes C 10 show tranite relay Stats lapi ANG ics titeccsadsidadesunseas soins patieeadaanseaaaiees C 11 show frame relay stats lapf transmit rer Corer er rer ererr ree erect rer C 11 show frame telay Stats SHADING swciccsccssccsscdesceinscccnmivenenmnntedacnmrenncunnskeodetnindenncdain C 12 show ftametelay stats signalling ac saccusssssarsascisarinnsesdvastadoaresocunssksetsunidectasuvadalideensus C 13 show frame relay stats signalling receive sesen Sees E sees C 14 show frame relay stats signalling transmit ccccceeeseeceeeeeseeeeeeeeeeseneeeees C 15 show frame telay STATS VOS soanrnunenonirnori teagan aa ai C 16 shov kamc relay SUMMAE sicaire eioan a ENa EASi C 17 Shon Taner tay BCE anina rained NEE EAS AeA C 19 show frame relay svcs calls T joco inka eee rer pobos eee C 19 show kamerelay svee DOr sectacucsietsncetnattncede net caai eiaei deere aon C 20 show frame telay SVCS SHAPING sciecc csssiecssdeenensnieuialins Masi aiaa C 20 show frame relay VCS siseses Sere E E E E T T C 21 Index 308624 14 10 Rev 01 xi Figures Figure tes frame Relay Network iss isssis iene vasesense ations potas ere ores 1 2 Figure 1 2 Frame Relay Header 2 Byte Format
207. size If the VC is sending large frames increase the value of this parameter to accommodate the size of those frames 1 3 6 1 4 1 18 3 5 9 9 2 1 16 Excess Burst Configuration Manager gt Protocols gt Frame Relay gt Services gt PVCs 0 0 to 2147483647 bits This value is added to the Committed Burst value to determine the maximum number of bits that may be transmitted during the VC s burst period when there is no congestion The Excess Burst plus the Committed Burst must be less than or equal to the line speed Enter a value within the given range 1 3 6 1 4 1 18 3 5 9 9 2 1 17 A 28 308624 14 10 Rev 01 Parameter Path Default Options Function Instructions MIB Object ID Parameter Path Default Options Function Instructions MIB Object ID Site Manager Parameters Throughput Configuration Manager gt Protocols gt Frame Relay gt Services gt PVCs 0 0 to 2147483647 b s The rate in bits per second at which data travels over this VC when no congestion is occurring To enable traffic shaping this parameter and the Committed Burst parameter must be set to values greater than zero Your carrier supplies the CIR or throughput value which you enter in this parameter 1 3 6 1 4 1 18 3 5 9 9 2 1 18 Congestion Control Configuration Manager gt Protocols gt Frame Relay gt Services gt PVCs Inherit Disable Enable Inherit Enables or disables congestion control on this
208. splays the mapping you just created Repeat steps 5 and 6 to create all the necessary mappings Click on Done You return to the Configuration Manager window 308624 14 10 Rev 01 Customizing PVCs Controlling Congestion for PVCs Congestion occurs when a node receives more frames than it can process or sends more frames than the transmission line can transport You can enable congestion control on your network When you enable congestion control the router receives congestion notification messages from the PVC experiencing congestion and drops all outbound traffic destined for that PVC until it no longer receives congestion notifications When you enable congestion control you can set the length of time during which the router counts congestion notifications You can also set the maximum number of congestion notifications that the router can receive during this time period If the router receives this number of congestion notifications within the time period you specify it stops transmitting data The router resumes transmission when it stops receiving congestion notifications If you use traffic shaping with congestion control you also need to decide which congestion control method the router should use For more information about traffic shaping see Using Traffic Shaping With PVCs on page 4 21 If you enable congestion control all PVCs on the interface use congestion control and the values you sp
209. st for Service window continued 5 8 308624 14 10 Rev 01 Customizing SVCs Site Manager Procedure continued You do this System responds 11 Add as many SVC options as your You return to the Frame Relay Service network requires then click on Done List window 12 Click on Done You return to the Configuration Manager window Disabling SVCs You can use either the BCC or Site Manager to disable SVCs without deleting them Using the BCC To disable SVCs navigate to the service record prompt or the record that you want to disable for example box serial 1 2 frame relay 1 2 service 8 0 32 svc options toronto and enter state disabled The default is enabled For example the following command line disables the SVC toronto svc options toronto state disabled svc options toronto Using Site Manager When you disable SVCs using Site Manager you disable SVC support for an entire service record not an individual SVC To disable SVCs complete the following tasks Site Manager Procedure You do this System responds 1 In the Configuration Manager window The Protocols menu opens choose Protocols 2 Choose Frame Relay The Frame Relay menu opens continued 308624 14 10 Rev 01 5 9 Configuring Frame Relay Services Site Manager Procedure continued You do this 3 Choose Services System responds The Frame Relay Service List
210. t Circuit 3 Click on Services The Frame Relay Circuit Definition window opens The Frame Relay Service List window opens 4 Click on PVCs The FR PVC List for Service window opens 5 Set the Hybrid Mode parameter to ON Click on Help or see the parameter description on page A 28 6 Edit other parameters if you want and click on Apply The Select Protocols window opens 7 Click on Cancel You return to the FR PVC List for Service window 8 Click on Done until you return to the Configuration Manager window 308624 14 10 Rev 01 Configuring PVC Pass Through Customizing PVCs To configure PVC pass through service you configure PVCs with the pass through feature You can then create a mapping between these PVCs provided they reside on different lines You can use a PVC for only one pass through mapping Configuring Pass Through PVCs To configure PVC pass through first configure the PVCs by completing the following tasks Site Manager Procedure You do this System responds 1 Configure at least two PVCs using the directions in Adding PVCs to Service Records on page 4 5 Configure the PVCs that you plan to map to one another on different lines 2 Set the Hybrid Mode parameter to ON according to the instructions in Configuring Hybrid Mode for PVCs on page 4 12 Complete only steps 1 through 5 3 Click on Apply
211. t name gt Displays only frame relay VCs configured on the specified interface service lt name gt Displays only frame relay VCs on the specified service state forwarding Displays information about VCs in the following states throttling shutdown forwarding shows only frame relay VCs that are forwarding e throttling shows only frame relay VCs that are throttling e shutdown shows only frame relay VCs that are shut down C 2 308624 14 10 Rev 01 Monitoring Frame Relay Using the BCC show Command The output contains the following information Interface DLCI Enable State Method Timer Counter Received FECN Received BECN Interface on which the frame relay circuit resides Name of the VC associated with this circuit Status of congestion control Disabled Enabled or Inherit Inherit indicates that the VC should use the parameters from the DLCMI record Status of traffic options are forwarding sending traffic at up to the maximum rate allowed on the PVC congested the PVC is not transmitting throttling the PVC is throttling back to the CIR rate Identifies the congestion method Shutdown the VC terminates when congestion occurs Throttle the VC queues traffic when congestion occurs traffic resumes when the congestion clears Throttle then shutdown first queues traffic when congestion occurs and then terminates the VC if throttling does not alleviat
212. ta Link Control Management Interface definition of 1 7 standards of 1 7 E Enable parameter Interface A 4 Enable parameter SVC LAPF A 13 enabling frame relay 2 1 encryption description 1 21 Error Threshold parameter A 8 error threshold description 3 8 Excess Burst parameter A 28 excess burst See Be exchange identification XID frames 1 9 Index 2 F FECN forward explicit congestion notification congestion control 1 22 definition of 1 5 frame relay customizing interfaces 3 1 customizing PVCs 4 1 customizing SVCs 5 1 deleting from the router 3 12 overview 1 2 packet structure 1 5 RIP management for SVCs B 1 show commands for BCC C 1 starting 2 1 Full Enquiry Interval parameter A 7 full enquiry interval description 3 8 G group mode description 1 15 H header format 2 byte 1 6 3 or 4 byte 1 6 high queue limit configuring 4 22 hybrid mode configuring 4 12 description 1 16 Hybrid Mode parameter A 28 l Inactivity Timer Mode parameter A 46 Inactivity Timer parameter A 46 inactivity timing SVCs configuring 5 25 overview 1 33 interface parameters A 2 IP adjacent hosts cofiguring 2 7 IPX adjacent hosts configuring 2 7 308624 14 10 Rev 01 K K Max Window Size parameter A 16 L LAPF active state 1 9 call present state 1 12 call proceeding processing 1 13 call setup processing 1 11 categories of management frames 1 9 connect m
213. te Manager Procedure You do this System responds 1 In the Configuration Manager window click on a port configured for frame relay The Edit Connector window opens Click on Edit Circuit The Frame Relay Circuit Definition window opens Click on Interfaces The Frame Relay Interface List window opens Set the following parameters Address Address Length Click on Help or see the parameter descriptions beginning on page A 6 5 Click on Apply 6 Click on Done You return to the Frame Relay Circuit Definition window Click on Done You return to the Configuration Manager window Monitoring the Connection You can monitor the status of your frame relay network connection by setting Time intervals for the router to send messages that verify the integrity of the link The number and frequency of error messages that can occur before the connection terminates Polling Interval The polling interval specifies the amount of time between status inquiry messages that the router transmits Status inquiry messages cause a network to respond with a link integrity verification message or full status message 308624 14 10 Rev 01 3 7 Configuring Frame Relay Services Successful completion of the request response handshake verifies the status of the router frame relay network link The default polling interval is 10 seconds If this value does not
214. teger gt integer is the length of time in seconds during which the router counts congestion notifications If the router receives the number of congestion notifications you set in the congestion counter during this interval the router stops transmitting data The value can be 0 5 1 1 5 2 2 5 3 3 5 4 4 5 or 5 seconds The default is 1 second For example the following command line sets a congestion timer of 2 5 seconds frame relay 1 2 congestion timer 2 5 frame relay 1 2 4 16 308624 14 10 Rev 01 Customizing PVCs Congestion Counter To change the value for the congestion counter navigate to the frame relay interface prompt for example box serial 1 2 frame relay 1 2 and enter congestion counter lt integer gt integer is the maximum number of congestion notifications the router can receive during the congestion timer period before it stops transmitting data The value can be from 1 to 500 notifications The default is 20 For example the following command line sets a congestion counter of 30 notifications frame relay 1 2 congestion counter 30 frame relay 1 2 Congestion Method To change the value for the congestion method navigate to the frame relay interface prompt for example box serial 1 2 frame relay 1 2 and enter congestion method lt value gt value can be throttle then shutdown first queues traffic when congestion occurs and then terminates the VC if throttling does not
215. ter retransmits the release message and restarts the timer If the timer expires a second time the router clears the call To set the release timer navigate to the signalling prompt for example box serial 1 2 frame relay 1 2 signalling 3 2 and enter release timer lt integer gt integer is the number of seconds allowed The value can be from 2 to 90 seconds The default is 4 For example the following command line sets a timer of 45 seconds signalling 3 2 release timer 45 signalling 3 2 308624 14 10 Rev 01 5 19 Configuring Frame Relay Services Call Proceeding Timer The call proceeding timer indicates the number of seconds allowed from the time the router receives a call proceeding message to the time the router receives a connect or disconnect message In the event of a timeout the router clears the call To set the release timer navigate to the signalling prompt for example box serial 1 2 frame relay 1 2 signalling 3 2 and enter call proceeding timer lt integer gt integer is the number of seconds allowed The value can be from 2 to 90 seconds The default is 10 For example the following command line sets a timer of 45 seconds signalling 3 2 call proceeding timer 45 signalling 3 2 Status Enquiry Timer The status enquiry timer indicates the number of seconds allowed from the time the router sends a status inquiry message to the time the router receives an incoming status disconnect release
216. thod navigate to the prompt for the SVC you want to modify for example box serial 3 2 frame relay 3 2 service 8 0 32 svc options toronto and enter congestion method lt value gt value can be throttle then shutdown first queues traffic when congestion occurs and then terminates the VC if throttling does not alleviate congestion This option is valid only when traffic shaping is enabled shutdown the default terminates the VC when congestion occurs throttle queues traffic when congestion occurs traffic resumes when congestion clears This option is valid only when traffic shaping is enabled inherit uses the value set for the interface For example the following command line sets a congestion method of throttle svc options toronto congestion method throttle svc options toronto 308624 14 10 Rev 01 5 31 Configuring Frame Relay Services Using Site Manager To configure congestion control for individual SVCs complete the following tasks Site Manager Procedure You do this System responds 1 In the Configuration Manager window choose Protocols The Protocols menu opens 2 Choose Frame Relay The Frame Relay menu opens 3 Choose Services The Frame Relay Service List window opens 4 Click on SVCs The FR SVC Options List for Service window opens 5 Choose the SVC record whose values for the following parameters match the remote end of the SVC connection Re
217. ticular SVC complete the following tasks Site Manager Procedure You do this System responds 1 In the Configuration Manager window The Protocols menu opens choose Protocols 2 Choose Frame Relay The Frame Relay menu opens 3 Choose Services The Frame Relay Service List window opens 4 Choose a service record with SVCs 5 Click on SVCs The FR SVC Options List for Service window opens continued 308624 14 10 Rev 01 5 25 Configuring Frame Relay Services Site Manager Procedure continued You do this System responds 6 Choose the SVC record whose values for the following parameters match the remote end of the SVC connection Remote Party Number Remote Party Sub Address Remote Party Number Plan Remote Party Type of Number 7 Set the following parameters Inactivity Timer Inactivity Timer Mode Click on Help or see the parameter descriptions beginning on page A 46 Click on Apply Click on Done You return to the Frame Relay Service List window 10 Click on Done You return to the Configuration Manager window Controlling Congestion for SVCs Congestion occurs when a network device receives more frames than it can process or sends more frames than the transmission line can transport When you enable congestion control the router receives congestion notification messages from the SVC experiencing congestion and drops all outbound t
218. tifications Number of outbound backward explicit congestion notifications 308624 14 10 Rev 01 Monitoring Frame Relay Using the BCC show Command show frame relay summary Displays general information about all frame relay interfaces You can display the current operational status and interface type This command allows for the following command filters and filter arguments state enabled disabled error type backup normal primary demand Displays information about the state of the frame relay interfaces e enabled shows only frame relay interfaces that are enabled disabled shows only frame relay interfaces that are disabled error shows only frame relay interfaces that are not present or are in a fault state Displays information about certain frame relay interface types e backup shows only frame relay interfaces used to back up another frame relay interface normal shows only frame relay interfaces that are not backup primary or demand frame relay interfaces primary shows only frame relay interfaces that have a backup frame relay interface assigned to them demand shows only dial on demand frame relay interfaces 308624 14 10 Rev 01 C 17 Configuring Frame Relay Services The output includes the following information Interface Circuit Management Type Interface Type Status Faults Number of VCs Total Number of VCs Active Servic
219. tocols menu Separates choices for command keywords and arguments Enter only one of the choices Do not type the vertical line when entering the command Example If the command syntax is show ip alerts routes you enter either show ip alerts or show ip routes but not both This guide uses the following acronyms ANSI ARP ATM DLCI American National Standards Institute Address Resolution Protocol Asynchronous Transfer Mode committed burst rate excess burst Bay Command Console backward explicit congestion notification Breath of Life message command response bit committed information rate cyclic redundancy check data communications equipment discard eligibility data link connection identifier 308624 14 10 Rev 01 xix Configuring Frame Relay Services DLCMI DTE EA FECN FRAD FTP HSSI IP IPX ISDN ITU T LAN LAPF LMI MAC MIB MTU OSI PRI PVC QoS SABME SNA SVC Te TEI TelNet TFTP Data Link Control Management Interface data terminal equipment extended address bit forward explicit congestion notification frame relay access devices File Transfer Protocol High Speed Serial Interface Internet Protocol Internet Packet Exchange Integrated Services Digital Network International Telecommunication Union Telecommunications sector formerly CCITT local area network link access procedure frame mode Local Management Interface media access control management information b
220. ts the operation of the inactivity timer Normally the inactivity timer resets when the inactivity mode is set to Both or Both Directions Either or Either Direction or Transmit Only or Outbound However if the data transmitted over an SVC matches a protocol priority filter with a no reset action the inactivity timer will not reset Instead the SVC may disconnect even though data is transmitting Managing Routing Information Protocol RIP and Inactivity Timing RIP is a mechanism that IP and IPX use to inform network devices of routing topology changes IP and IPX let you control the frequency and destination of RIP packets Because RIP packets can affect how the router establishes and disconnects frame relay SVCs the software controls how RIP interacts with the frame relay SVC inactivity timer and the inactivity timer mode For more information see Appendix B RIP Management for Frame Relay SVCs 1 34 308624 14 10 Rev 01 Frame Relay Overview Multiline for PVCs Frame relay provides a link redundancy feature called multiline which works with frame relay PVCs Multiline is a Nortel Networks proprietary implementation that lets you group two or more physical lines that back each other up in case of a failure This ensures that information arrives at its destination on the network In addition if both lines are up the router uses both lines simultaneously Two or more physical lines must be available for a multiline config
221. ty traffic 200 for normal and 30 for low 308624 14 10 Rev 01 1 31 Configuring Frame Relay Services You can use the Technician Interface to increase the total number of buffers for the interface You can also redistribute buffers among the VCs and the priority queues The parameters that you customize at the interface level are e wfFrDicmiShapingHiQueueLimit e wfFrDIcmiShapingNormalQueueLimit e wfFrDicmiShapingLoQueueLimit The parameters you can customize at the VC level are e wfFrCircuitShapedHiQueueLimit e wfFrCircuitShapedNormalQueueLimit e wfFrCircuitShapedLoQueueLimit For information on using the Technician Interface see Using Technician Interface Software Congestion Counters and Timers The router determines congestion based on a specified number of FECN and BECN bits received during a set time period for more information see Congestion Control on page 1 22 When congestion occurs on a traffic shaped VC the router either drops traffic throttles it or throttles and then drops traffic depending on the configured congestion method The FECN and BECN notifications are part of the header in a frame relay data packet In a big pipe little pipe topology the central site router A typically sends much more data than it receives Figure 1 11 This means that the remote site routers B C and D that receive a lot of traffic may be getting large numbers of FECNs while the central site router is getting
222. u choose the text to enter based on the description inside the brackets Do not type the brackets when entering the command Example If the command syntax is ping lt p_address gt you enter ping 192 32 10 12 Indicates command names and options and text that you need to enter Example Enter show ip alerts routes Example Use the dinfo command Indicate optional elements in syntax descriptions Do not type the brackets when entering the command Example If the command syntax is show ip interfaces alerts you can enter either show ip interfaces or show ip interfaces alerts Indicate that you repeat the last element of the command as needed Example If the command syntax is ethernet 2 1 lt parameter gt lt value gt you enter ethernet 2 1 and as many parameter value pairs as needed Indicates file and directory names new terms book titles and variables in command syntax descriptions Where a variable is two or more words the words are connected by an underscore Example If the command syntax is show at lt valid_route gt valid_route is one variable and you substitute one value for it xviii 308624 14 10 Rev 01 screen text separator gt vertical line Acronyms Preface Indicates system output for example prompts and system messages Example set Trap Monitor Filters Shows menu paths Example Protocols gt IP identifies the IP option on the Pro
223. umber parameter A 37 SVC Local Party Number Plan parameter A 37 SVC Local Party Sub Address parameter A 37 SVC Local Party Type of Number parameter A 38 SVC screen control configuring 5 6 SVC screen usage configuring 5 6 SVC Support parameter A 36 SVCs 1 12 adding options to service records 5 7 call proceeding message 1 13 call proceeding processing 1 13 call setup processing 1 11 1 13 categories of management frames 1 9 configuring a default service record 2 6 connect message 1 13 connect message processing 1 13 definition 1 3 disabling 5 9 disconnect message 1 13 disconnect message processing 1 13 disconnecting active circuits 5 10 exchange identification XID frames 1 9 frame relay signaling 1 8 incoming call proceeding 1 12 LAPF and signaling 1 8 LAPF operational states 1 9 LAPF signaling modifying 5 11 LAPF timeout and retransmission timers 1 10 N200 retransmission timeout 1 10 numbered information frames 1 9 numbered supervisory frames 1 9 parameters LAPF A 12 parameters service records A 35 308624 14 10 Rev 01 parameters signaling A 17 release message processing 1 14 release request state 1 12 retransmission timeouts 1 10 1 11 RIP management configuration B 1 setup message 1 11 1 13 signaling 1 11 T200 retransmission timeout 1 10 unnumbered control frames 1 9 synchronous line configuration for frame relay circuits 1 38 T T200 retransmission timeout 1 10 T
224. uration Figure 1 12 illustrates a multiline configuration DLCI100 Line a DLC 200 l Frame relay network Router Router DLCI100 Line B DLCI 200 FR0009A Figure 1 12 Multiline Network In this example when the router receives traffic destined for the network it alternates or randomizes depending on how you configure it between line A and line B to transmit the data The router uses both lines simultaneously to balance the traffic between each path If one of these lines goes down the router uses the remaining line You can create a multiline configuration of up to four service records Each service record must be on a different physical line on the router Each line should be on a different slot to provide fault tolerance You must also match DLCIs in each service record of the multiline Matching DLCIs ensures that a backup exists for each PVC 308624 14 10 Rev 01 1 35 Configuring Frame Relay Services The most important part of configuring multiline is setting the PVC DLCI number This number identifies each PVC thereby specifying a path for the router to direct data to the network For each frame relay PVC that you configure check that PVCs with the same destination have the same DLCI number Note If you use multiline packets traveling on
225. uring broadcasts e Lower customer costs by creating multiple broadcast domains e Conserve resources because they require a small number of circuits e Are easy to configure Default Service Record The router creates the first service record automatically when you select frame relay as your WAN protocol This first service record is the default service record Any VCs not associated with another configured service record use the default service record 1 14 308624 14 10 Rev 01 Frame Relay Overview Multiple Service Records Interfaces can have multiple service records and each service record can contain multiple PVCs SVCs or combinations of PVCs and SVCs Adding and Moving PVCs You can add PVCs to a service record either individually or in a range You can also move PVCs on the same interface from one service record to another individually or as a group For instructions see Deleting Frame Relay on page 3 12 Frame Relay Access Modes Nortel Networks describes frame relay PVCs in terms of three access modes group direct and hybrid The following topics define each of these modes within the context of service records Group Access Mode Group mode describes a service record with multiple VCs It represents a true point to multipoint circuit In group access mode upper layer protocols treat each frame relay network interface as a single access point to the switched network The upper layer protocols use a sin
226. vices The Frame Relay Service List window opens 4 Click on the Multiline button The Services Multilined With window opens A 32 308624 14 10 Rev 01 Site Manager Parameters This window lets you e Specify how a multiline circuit distributes traffic by setting the Multiline Algorithm to Choose Line parameter e Add multiline services to a circuit Click on Add to open the Add Multiline Services window Figure A 9 Next click on a circuit entry and click on Select When you do this the circuit entry moves from the Add Multiline Services window to the Services Multilined With window indicating that it has been added to the multiline circuit The Add Multiline Services window closes p D Multi line with 204102 0 7 FR Slot 4 COM3 Cct 8 Default FR Slot 3 T1 1 Cct 9 Default Select Cancel Figure A 9 Add Multiline Services Window 308624 14 10 Rev 01 A 33 Configuring Frame Relay Services Parameter Path Default Options Function Instructions MIB Object ID Multiline Algorithm to Choose Line Configuration Manager gt Protocols gt Frame Relay gt Services gt Multiline None Random Address Based Specifies how the multiline circuit distributes traffic over its data paths as follows Random sends data alternately over the two paths This method ensures even distribution among the lines but the packets arrive out of sequence Address Based sends
227. vity timer and direction Service Record Inactivity Values To set inactivity values for a service record navigate to the prompt for the service record you want to modify for example box serial 3 2 frame relay 3 2 service 8 0 32 and enter svc inactivity timer lt integer gt integer is the length of time in seconds before the SVC terminates if there is no data activity in the direction specified in the svc inactivity direction parameter 5 22 308624 14 10 Rev 01 Customizing SVCs The value can be from 0 to 2147483647 seconds The default is 60 seconds For example the following command line sets the inactivity timer to 90 seconds service 8 0 32 svc inactivity timer 90 service 8 0 32 To configure the inactivity direction enter svc inactivity direction lt direction gt direction can be both only data transmitted AND received by the router prevents the expiration of the inactivity timer If the router does not transmit and receive data the inactivity timer expires and disconnects the SVC outbound only data transmitted by the router prevents the expiration of the inactivity timer If the router does not transmit any data the inactivity timer expires and disconnects the SVC inbound only data received by the router prevents the expiration of the inactivity timer If the router does not receive any data the inactivity timer expires and disconnects the SVC either only data transmitted OR
228. wing features using the BCC e State e Maximum SVCs e Setup timer e Disconnect timer e Release timer e Call proceding timer e Status enquiry timer e Status enquiry retry State You can enable or disable signaling using the BCC state parameter To change the state navigate to the signalling prompt for example box serial 1 2 frame relay 1 2 signalling 3 2 and enter state lt value gt value can be enabled or disabled The default value is enabled For example the following command line disables signaling signalling 3 2 state disabled signalling 3 2 308624 14 10 Rev 01 5 17 Configuring Frame Relay Services Maximum SVCs Maximum SVCs indicates the maximum number of simultaneous switched virtual circuits allowed on the port The more SVCs you allow the larger the system memory required to support them To set the maximum SVCs navigate to the signalling prompt for example box serial 1 2 frame relay 1 2 signalling 3 2 and enter maximum svcs lt integer gt integer is the number of SVCs allowed The value can be from 1 to 2147483647 The default is 100 For example the following command line sets a maximum of 200 SVCs signalling 3 2 maximum svcs 200 signalling 3 2 Setup Timer The setup timer indicates the number of seconds allowed from the time the router sends a setup message to the called subscriber and receives a connect or call proceeding message from that subscriber If a timeout
229. xcess Burst parameter A 52 LL Core Out Throughput parameter A 50 LMI Local Management Interface 1 7 3 2 A 5 low queue limit configuring 4 22 M management protocols See DLCMI management type selecting 3 2 Max SVCs parameter A 18 Mgmnt Type parameter A 5 Monitored Events parameter A 8 moving PVCs 4 9 MTU size for frame relay connections 1 39 Multicast parameter A 9 A 27 multicast enabling 4 10 multiline configuring 4 27 description of 1 35 removing 4 28 traffic distribution over lines 1 36 Multiline Algorithm to Choose Line parameter A 34 Index 3 N N200 retransmission timeout 1 10 N200 Max Retries parameter A 16 N201 Max Frame Size parameter A 16 N322 Status Eng Retry Max parameter A 21 network congestion 1 22 normal queue limit configuring 4 22 numbered information frames 1 9 numbered supervisory frames 1 9 O Options Name parameter A 42 oversubscribing the interface traffic shaping 1 31 overview of frame relay 1 2 P packet structure frame relay 1 5 pass through See PVC pass through Polling Interval parameter A 7 polling interval description 3 7 product support xxii protocol prioritization and multiline 1 37 definition of 1 21 with traffic shaping 1 25 publications hard copy xxi PVC pass through configuring 4 13 overview 1 37 PVCs adding to a service record 1 15 4 5 configuring a default service record 2 4 deleting 4 7 desc
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231. y data transmitted by the router prevents the expiration of the inactivity timer If the router does not transmit any data the inactivity timer expires and disconnects the SVC Receive Only only data received by the router prevents the expiration of the inactivity timer If the router does not receive any data the inactivity timer expires and disconnects the SVC Both Directions only data transmitted AND received by the router prevents the expiration of the inactivity timer If the router does not transmit and receive data the inactivity timer expires and disconnects the SVC Either Direction only data transmitted OR received by the router prevents the expiration of the inactivity timer If the router does not transmit or receive data the inactivity timer expires and disconnects the SVC Select an option appropriate for you network 1 3 6 1 4 1 18 3 5 9 9 10 1 13 A 46 308624 14 10 Rev 01 Parameter Path Default Options Function Instructions MIB Object ID Parameter Path Default Options Function Instructions MIB Object ID Site Manager Parameters X 213 Data Priority Configuration Manager gt Protocols gt Frame Relay gt Services gt SVCs 15 0 to 15 Sets the priority of data on the network connection as defined in ITU T Q 933 and X 213 This is a value the router requests it is not guaranteed A value of 0 is the lowest priority and 14 is the highest A value of 15 mean
232. y the precompressed traffic is shaped the compressed traffic is not shaped WCP compresses data at the rate it receives it which with traffic shaping is the CIR It is therefore unrealistic to expect a high compression throughput for data that originates from a site that also uses traffic shaping Oversubscribing the Traffic Shaping Interface The CIRs that you configure are based on an average peak rate for the VCs on the network If all VCs with traffic shaping try to send data simultaneously they may exceed the capacity of the interface If you oversubscribe the interface traffic shaping will still enforce the CIR but there may be additional latency for reserved flows VCs without traffic shaping will send data after traffic shaped VCs Queue Limits and Data Clipping Nortel Networks routers maintain buffers for each traffic shaped VC Each buffer can hold one frame that the router cannot send because of congestion The router divides the number of buffers on the interface Some facts specific to buffers are The default number of buffers is 200 per interface To change the buffer number you can use the Technician Interface The software divides the number of buffers on the interface by the number of traffic shaped VCs giving each VC the same number of buffers Therefore if you have ten traffic shaped VCs per interface each VC has 20 buffers If you enable protocol prioritization the default number of buffers is 30 for high priori

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